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4
Maybe the water has some CO2 dissolved in it.
A change of color specific for acids, red-brown for Merck pH indicators.
This illness is called acidosis.
CO2 gas is acidic in nature and forms carbonic acid in water so pH value becomes decreased (from 7 to downwards 6,5 or 4)
As CO2 is added to water, the pH usually decreases.
4
Algae draws all available CO2 out of water, causing its pH to increase.
CO2 dissolves in water and forms H2CO3, a weak acid. Therefore, the presence of CO2 will lower the pH slightly from its previous level.
Approximate pH of 4, pH will vary based on the amount of CO2 as well as other minerals in the seltzer and the pH of the water.
No. Rather, the CO2 concentration controls the pH. Other factors control concentration, such as temperature, pressure, contamination, and availability of CO2.
Maybe the water has some CO2 dissolved in it.
we do add KCl to water for the measurement of pH to prevent CO2 from dissolution in water and forming of H2CO3
A change of color specific for acids, red-brown for Merck pH indicators.
A substance does not have a particular pH as pH depends on both how strong an acid/base is and how concentrated it is in a solution of water (how much is in a given volume) CO2 will react to a small degree with water to produce carbonic acid, so the pH will be less than 7. How much of the acid is produced, however depends on a number of variables such as pressure, temperature, and CO2 concentration.
the water will get more acidic. the PH will decrease meaning the pH is acidic
CuO and CO2 (as a dry gas) has not a pH.