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Question

The phenomenon of interaction of anions and cations furnished by an electrolyte with the H+ and OH ions of water of produce acidic nature or alkaline nature is known as hydrolysis. In hydrolysis:
  1. the pH may either increase or decrease
  2. the variation of pH depends upon the nature of salt as well as temperature
  3. all the salts undergo hydrolysis
  4. none of the above

A
the pH may either increase or decrease
B
all the salts undergo hydrolysis
C
the variation of pH depends upon the nature of salt as well as temperature
D
none of the above
Solution
Verified by Toppr

"The phenomenon of the interaction of anions and cations of the salt with the hydrogen ion and hydroxide ions furnished by water yielding acidic or alkaline solution is known as salt hydrolysis.
pH is defined as the concentration of proton H+, so it depends on this concentration. If we have a system, in which the concentration changes when changing temperature, of course, pH will change. Some systems can produce proton H+ with increasing temperature, so the pH value will decrease.

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