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Aqueous solutionAcidityCarbon DioxidePeroxideNegatively chargedAcidsCarbonateLiterMoleculesSalt concentrationsSodiumSingle protonOxygenMeasurementParticlesCalcium ionExposureWaterProtonIncreasesAcidic or basicMetal ionSubstanceSoilAlkalineCommerciallyDecreaseSolutionActivityReactionAlcoholLowerParticleElectronTemperatureHigherTermPowerNegativeMeasureValuesEffectDirectHighContentsLevel

Aqueous solution5

• in an aqueous solution, an increased concentration of hydrogen ions yields a low pH, and subsequently, an acidic product. (wikipedia.org)
• The distribution of copper (7440508) between a buffered aqueous solution of the metal ion and an organic solution of tobacco smoke condensate (TSC) in 4-methyl-2-pentanone (MIBK) has been studied. (cdc.gov)
• pH tells only about the concentration of "free" [H] / [OH] ions in a aqueous solution. (goldwell.com)
• an aqueous solution or the activity of the Hydrogen ions. (penelopethemovie.com)
• Synonyms for an aqueous solution of hydrogen chloride include chlorohydric acid, hydrochloric acid, and muriatic acid. (cdc.gov)

Acidity8

• McClendon J. F. Acidity curves in the stomachs and duodenums of adults and infants plotted with the acid of imported methods of measuring hydrogen ion concentration. (wikipedia.org)
• The amount of acidity present in paper can be determined by calculating the hydrogen ion concentration. (surreycc.gov.uk)
• so, the higher the concentration of hydrogen ions in the substance, the higher the acidity, and the lower is the pH value. (bewellbuzz.com)
• The lesser the concentration of hydrogen ions in a substance, the lower is the acidity, higher the alkalinity, and the higher the pH. (bewellbuzz.com)
• Soil acidity refers to the concentration of active hydrogen ions (H + ) in the soil. (ufl.edu)
• The degree of acidity or alkalinity of any liquid (including blood) is a function of its hydrogen ion concentration [H + ], and pH is simply a way of expressing hydrogen ion activity. (radiometer.com)
• Soil pH is a measurement of active soil acidity which is the concentration of hydrogen ions in the soil solution. (farmprogress.com)
• Soil solution pH is also related to the reserve acidity which is hydrogen ions attached to clay and organic matter. (farmprogress.com)

Carbon Dioxide1

• Ocean acidification is the direct consequence of elevated concentrations of hydrogen ions and carbonate saturation from significant absorption of carbon dioxide (CO2) by the world's oceans. (wikipedia.org)

Peroxide6

• Fretting in cell culture growth media is higher in those media containing higher calcium ion concentrations or containing hydrogen peroxide. (astm.org)
• Catalase (Enzymes) Abstract In this laboratory exercise, studies of enzyme catalase, which accelerates the breakdown of hydrogen peroxide into water and oxygen. (educationindex.com)
• reactivity of the enzyme catalase on hydrogen peroxide while subject to different concentrations of an inhibitor. (educationindex.com)
• The hypothesis was that hydrogen peroxide will be broken down by catalase into hydrogen and oxygen, where a higher concentration of inhibitor will yield less oxygen, resultant of a lower rate of reaction. (educationindex.com)
• Hydrogen peroxide lotion (H 2 O 2 ) is always acidic for stability and to avoid unwanted oxidization. (goldwell.com)
• The alkalinity of the hair color de-stabilizes the hydrogen peroxide lotion, releasing oxygen and activating the oxidative reaction needed for coloring. (goldwell.com)

Negatively charged2

• Depending on the charge of the ion, two different classes can be distinguished: positively charged ions and negatively charged ions. (wikipedia.org)
• Ionized calcium binds to negatively charged sites on protein molecules, competing with hydrogen ions for the same binding sites on albumin and other calcium-binding proteins. (medscape.com)

Acids4

• In connection with acids, "hydrogen ions" typically refers to hydrons. (wikipedia.org)
• Acids are molecules that, in certain environments, like water, will release a hydrogen ion (a single proton). (winemakermag.com)
• the hydrogen ions come from the disassociation of wine acids in water. (winemakermag.com)
• Acids always have more Hydrogen H+ ions while alkalines have more Hydroxide OH ions. (goldwell.com)

Carbonate3

• Put simply, it increases the concentration of hydrogen ions and reduces the amount of carbonate ions. (cleantechnica.com)
• Shellfish and other sea life rely on carbonate ions to grow their shells and thrive. (cleantechnica.com)
• But with fewer carbonate ions, shells become thin and brittle, growth slows down, and death rates increase. (cleantechnica.com)

Liter2

• H + ] is the concentration of hydrogen ions in moles per liter. (quizlet.com)
• A pH of 7.4 is equivalent to 40 nanoMols/liter [H + ] (hydrogen ion concentration). (acid-base.com)

Molecules3

• Hydrogen forms the only cation that has no electrons, but even cations that (unlike hydrogen) still retain one or more electrons are still smaller than the neutral atoms or molecules from which they are derived. (wikipedia.org)
• By definition, an acid is an ion or molecule that can donate a proton, and when introduced to a solution it will react with water molecules (H2O) to form a hydronium ion (H3O+), a conjugate acid of water. (wikipedia.org)
• Because hydrogen ions are electrically-charged molecules, the electrodes within Chawang's pH sensor can detect the electrical charge generated by the concentration of hydrogen ions inside food, converting the level to pH values using what is known as the Nernst equation. (smu.edu)

Salt concentrations2

• Organisms that thrive in very high salt concentrations ex. (flashcardmachine.com)
• Because of an interfering relaxation dispersion from nanosecond water exchange, we cannot determine the oligomer populations at intermediate salt concentrations. (lu.se)

Sodium3

• Due to its extremely high charge density of approximately 2×1010 times that of a sodium ion, the bare hydrogen ion cannot exist freely in solution as it readily hydrates, i.e., bonds quickly. (wikipedia.org)
• Soil pH can also influence soil nutrient availability, as well as indicate the presence of free lime and an excess of some ions such as sodium and aluminum. (farmprogress.com)
• Hydrogen chloride is produced commercially by any of the following reactions: heated hydrogen gas with calcium chloride, sulfuric acid with sodium chloride, sodium chloride with sulfur dioxide and steam, and hydrogen burned in chlorine. (cdc.gov)

Single proton1

• In the image at left the hydrogen atom (center) contains a single proton and a single electron. (wikipedia.org)

Oxygen1

• Continuous oxygen binding curves for two arthropodan hemocyanins were performed at different pH values ranging from 7.0 to 8.7 and in the presence of physiological concentrations of the bivalent ions Ca2+ and Mg2+. (uni-regensburg.de)

Measurement3

• It's a measurement of the concentration of hydrogen ions. (naturalnews.com)
• pH is a concentration measurement and ORP is not. (penelopethemovie.com)
• Measurement of ionized calcium is by ion-selective electrodes. (medscape.com)

Particles3

• A positively charged hydrogen ion (or proton) can readily combine with other particles and therefore is only seen isolated when it is in a gaseous state or a nearly particle-free space. (wikipedia.org)
• Indoors, the concentration of viral particles is often higher than outdoors. (cdc.gov)
• Although it isn't known exactly how much the concentration of viral particles in air needs to be reduced to start reducing risk of viral infection, ventilation mitigation strategies still provide a reasonable approach to reducing risk. (cdc.gov)

Calcium ion1

• The calcium ion (Ca 2+ ) is one of the most prevalent cations in the body, where approximately 1 % is present in the extracellular fluid of blood. (radiometer.com)

Exposure4

• Inhalation is an important route of exposure to hydrogen chloride. (cdc.gov)
• However, only 50% of exposed persons can perceive hydrogen chloride's odor at the OSHA permissible exposure limit (5 ppm), and odor may not provide adequate warning in the workplace . (cdc.gov)
• Protective indoor ventilation practices can reduce the airborne viral concentrations and the overall viral exposure to occupants. (cdc.gov)
• The effects of these exposures on hormone concentrations, and markers of function and/or injury in the olfactory bulb, hypothalamus and testes were measured after 1, 8 and 30days exposure. (cdc.gov)

Water9

• Please use boiling water or mineral water to generate hydrogen-rich water. (yoibo.com)
• The best drinking time for the finished hydrogen-rich water is within two hours. (yoibo.com)
• The physico-chemical parameters in the water body vary in concentration along spatial, monthly and seasonal variation of Olosuru stream. (scirp.org)
• The concentrations of most parameters exceeded recommended permissible limits of the Nigerian Standard for Drinking Water and World Health Organization for freshwater quality. (scirp.org)
• The pH (potential hydrogen) can be measured from the surface of paper or from its aqueous extract prepared by macerating a tiny quantity with fresh distilled or deionised water. (surreycc.gov.uk)
• Pure water contains H and OH Ions in equal measure. (goldwell.com)
• Diluting chemical products e.g. hair color with water does not change the pH value but does lower the concentration of the dyestuffs. (goldwell.com)
• pH sensors measure the hydrogen ion concentration and ORP probes instead measure the electron potential in the water. (penelopethemovie.com)
• Commercial concentrated hydrochloric acid contains 36% to 38% hydrogen chloride in water. (cdc.gov)

Proton2

• The hydrogen anion, with its loosely held two-electron cloud, has a larger radius than the neutral atom, which in turn is much larger than the bare proton of the cation. (wikipedia.org)
• We have used proton magnetic relaxation dispersion (MRD) to study the self-association of bovine -lac- toglobulin variant A (BLG-A) as a function of temperature at pH 4.7 (dimer-octamer equilibrium) and as a function of NaCl concentration at pH 2.5 (monomer-dimer equilibrium). (lu.se)

Increases1

• KAE609 also increases cytoplasmic hydrogen ion concentrations in yeast cells. (jcvi.org)

Acidic or basic2

• Hydrogen ions concentration, measured as pH, is also responsible for the acidic or basic nature of a compound. (wikipedia.org)
• ORP is similar to pH in that pH indicates how acidic or basic a solution is based on the hydrogen ion activity within the solution and ORP indicates the reduction- oxidation status of a solution based on the collective electron activity within the solution. (penelopethemovie.com)

Metal ion3

• The analytical parameters, metal ion and hydrogen ion concentrations, were investigated. (cdc.gov)
• Metal ion concentrations were determined by atomic absorption spectrophotometry. (cdc.gov)
• Fretting may contribute to corrosion and metal ion and particle release directly, or may contribute to the initiation of crevice corrosion. (astm.org)

Substance2

• whereas "p[H]" measures the concentration of hydrogen ions in a substance. (bewellbuzz.com)
• The pH level is measured by the concentration of hydrogen ions found in a substance or solution. (smu.edu)

Soil2

• Lower pH values are associated with more active hydrogen ions and more acidic soil conditions. (ufl.edu)
• Most of these fertilizers contain ammonium which, when biologically transformed to nitrate-N, release hydrogen ions that decrease soil pH. (farmprogress.com)

Alkaline1

• Less H Ions than OH ions = more alkaline. (goldwell.com)

Commercially2

• The aim of this study was to test the effect of varying alcohol concentrations of various commercially available mouthwashes on force decay of elastomeric chains in prestretched and unstretched condition. (thejcdp.com)
• Hydrogen chloride is available commercially as an anhydrous gas or as aqueous solutions (hydrochloric acid). (cdc.gov)

Decrease1

• By using self investigative and experimental skills, the experiment was done in order to determine how the rate of reaction will be altered, whether it will increase, decrease or remain constant when the different concentration of enzymes added. (educationindex.com)

Solution3

• For Each Hydrogen Or Hydroxide Ion Concentration Listed, Calculate The Concentration Of The Complementary Ion And The PH And POH Of The Solution. (academicpros.net)
• How do you determine concentration of hydrogen ions when given the pH of a solution? (frostburg.edu)
• For example, the molarity of hydrogen ions in a pH 5 solution is 10 -5 M. (frostburg.edu)

Activity3

• measure the enzyme activity of β-galactosidase in the different concentrations of o-Nitrophenylgalactoside (ONPG) using a spectrophotometer. (educationindex.com)
• pH = -log aH + where aH + is hydrogen ion activity. (radiometer.com)
• About pH Sensors Campbell Scientific pH sensors measure the level of pH in sample solutions by measuring the activity of the hydrogen ions in the solutions. (penelopethemovie.com)

Reaction2

• Once the enzyme concentration was changed the reaction was slight but evident the tubes had a varying color of light amber to a yellow color change. (educationindex.com)
• investigate the effects of the increase in the enzyme concentration on the rate of reaction. (educationindex.com)

Alcohol1

• The effects of varying alcohol concentrations commonly found in mouth rinses on the force decay of elastomeric chain. (thejcdp.com)

Lower1

• For pH, which is measured on a logarithmic scale, a continuum of acid to base, the lower the number, the greater the amount of free hydrogen ions in the wine, and therefore the more intense the perception of acid is in a wine. (winemakermag.com)

Particle1

• When indoors, ventilation mitigation strategies can help reduce viral particle concentration. (cdc.gov)

Electron2

• A hydrogen ion is created when a hydrogen atom loses an electron. (wikipedia.org)
• A hydrogen atom is made up of a nucleus with charge +1, and a single electron. (wikipedia.org)

Temperature1

• At room temperature, hydrogen chloride is a colorless to slightly yellow gas with a pungent odor. (cdc.gov)

Higher1

• In addition, they may be exposed to higher levels than adults in the same location because of their short stature and the higher levels of hydrogen chloride found nearer to the ground. (cdc.gov)

Term2

• The hydrogen ion is recommended by IUPAC as a general term for all ions of hydrogen and its isotopes. (wikipedia.org)
• The term pH literally means power Hydrogen . (naturalnews.com)

Power1

• The pH scale is a convenient way of expressing hydrogen ion concentration by simply referring to its logarithmic power. (goldwell.com)

Negative1

• Hydrogen anions are formed when additional electrons are acquired: Hydride: general name referring to the negative ion of any hydrogen isotope (H−) Protide: 1H− Deuteride: 2H−, D − Tritide: 3H−, T − Hydrogen ions drive ATP synthase in photosynthesis. (wikipedia.org)

Measure1

• pH, for example, is always presented as a logarithmic measure, pH=-log10(H+), where H+ is the concentration of hydrogen ions in moles per cubic decimetre. (bmj.com)

Values1

• Approximate values make it easier to visualize the Hydrogen Ion concentrations. (acid-base.com)

Effect2

• The effect of hydrogen ion concentration on the force-degradation rate of orthodontic polyurethane chain elastics. (thejcdp.com)
• The Effect of Substrate Concentration, Enzyme. (educationindex.com)

Direct2

• McClendon J. F. A direct reading potenciometer for measuring hydrogen ion concentration. (wikipedia.org)
• Direct contact with aqueous solutions of hydrogen chloride or with concentrated vapor can cause severe chemical burns. (cdc.gov)

High1

• This happens when hydrogen ions get pushed across the membrane creating a high concentration inside the thylakoid membrane and a low concentration in the cytoplasm. (wikipedia.org)

Contents1

• The hydrogen ion concentrations of the contents of the small intestine. (wikipedia.org)

Level1

• The saccharin disrupts carbonic anhydrase IX's ability to regulate the cancer cell's pH level - its hydrogen ion concentration. (scienceblog.com)