Sentences with phrase «in hydrogen ion concentration»

Surface ocean pH has decreased by 0.1 unit due to absorption of anthropogenic CO2 emissions (equivalent to a 30 % increase in hydrogen ion concentration) and is predicted to decrease by up to a further 0.3 - 0.4 units by 2100 (Caldeira and Wickett, 2003).

Here is another post I did on this topic http://chriscolose.wordpress.com/2007/12/22/corals-in-peril/ Increasing H3O ^ + obviously does raise the acidity, as the anonymous poster mentioned... the slight change in pH can have a remarkable effect on the change in Hydrogen ion concentration.

The pH scale is logarithmic, so a change of 1 unit corresponds to a 10-fold change in hydrogen ion concentration.

From preindustrial levels, contemporary surface ocean pH is estimated to have dropped on average from 8.2 to 8.1, or by about 0.1 pH units (a 26 % increase in hydrogen ion concentration), and further decreases of 0.22 to 0.35 pH units are projected over this century unless carbon dioxide emissions are significantly reduced.

In that respect, what I find more interesting is the lack of (un) certainty discussion in the text I quoted, although describing «a 26 % increase in hydrogen ion concentration» as «almost 30 % more acidic» is telling.

From preindustrial levels, contemporary surface ocean pH is estimated to have dropped on average from 8.2 to 8.1, or by about 0.1 pH units (a 26 % increase in hydrogen ion concentration), and further decreases of 0.22 to 0.35 pH units are projected over this century unless carbon dioxide emissions are significantly reduced (Orr et al., 2005; Bopp et al., 2013).

If the surface ocean PCO2 concentrations continue to increase in proportion with the atmospheric CO2 increase, a doubling of atmospheric CO2 from preindustrial levels will result in a 30 % decrease in carbonate ion concentration and a 60 % increase in hydrogen ion concentration.

If the surface ocean pCO2 concentrations continue to increase in proportion with the atmospheric CO2 increase, a doubling of atmospheric CO2 from preindustrial levels will result in a 30 % decrease in carbonate ion concentration and a 60 % increase in hydrogen ion concentration.

Not exact matches

Ordinary «bulk» silicon with high concentrations of hydrogen implanted in the crystal lattice showed some promise, but to «dope» silicon in this way meant bombarding it with ion beams, which damages it.

This stands for power of hydrogen, and it measures the concentration of hydrogen ions in a substance.

Scientifically, it measures the hydrogen ions in a concentration.

Learners will answer questions about: • Acid - base definitions • Hydrogen ions and acidity • pH calculations • hydrogen ion and hdyroxide ion concentrations • acid and base strength • acid dissociation constant • neutralisation reactions • salts in solution • titration calculations This resource is meant to be used by teachers inHydrogen ions and acidity • pH calculations • hydrogen ion and hdyroxide ion concentrations • acid and base strength • acid dissociation constant • neutralisation reactions • salts in solution • titration calculations This resource is meant to be used by teachers inhydrogen ion and hdyroxide ion concentrations • acid and base strength • acid dissociation constant • neutralisation reactions • salts in solution • titration calculations This resource is meant to be used by teachers in the US.

In my papers and the Royal Society report, we are speaking of acidity in the sense of a measure of hydrogen - ion activity (roughly, concentrationIn my papers and the Royal Society report, we are speaking of acidity in the sense of a measure of hydrogen - ion activity (roughly, concentrationin the sense of a measure of hydrogen - ion activity (roughly, concentration).

and as Judith notes, adding CO2 has thus far increased the hydrogen ion concentration in the oceans by 26 % thus rendering them more acidic.

In this context a 30 % change is very small, as you have to increase the hydrogen ion (H +) concentration by a factor of 10 to get a decrease in pH of In this context a 30 % change is very small, as you have to increase the hydrogen ion (H +) concentration by a factor of 10 to get a decrease in pH of in pH of 1.

Carbon dioxide combines with water to form carbonic acid, which then dissociates to form bicarbonate ions and hydrogen ions (H +), so that increasing concentrations of CO2 in the atmosphere have been decreasing the pH (acidifying) of the surface ocean (NRC, 2010c).

Many current authors do not even describe the proper definition of pH. It is not related in the first instance to the concentration of hydrogen ions (as is commonly stated) but to the activity of the hydrogen ions.

pH, a common notation used to indicate a mediums alkalinity or acidity, stands for «potential hydrogen» — as it is a measure of the concentration of hydrogen ions in the medium.