Given: H 2 O( aq )+ H 2 O( l ) H 3 O + ( aq ) +OH¯( aq ), D H ° rxn > 0 When the

Question

Given: H2O(aq)+ H2O(l)   H3O+(aq) +OH¯(aq), DH°rxn > 0
When the temperature of a sample of pure water is raised above25°C,
A. the hydronium ion concentration will be greater than thehydroxide ion concentration.
B. the hydronium ion concentration will be less than thehydroxide ion concentration.
C. the value of Kw will increase.
D. the hydronium ion concentration could change to 1.0 ´10¯10M.
E. the hydroxide ion concentration could change to 1.0 ´10¯10M. Explain. Given: H2O(aq)+ H2O(l)   H3O+(aq) +OH¯(aq), DH°rxn > 0
When the temperature of a sample of pure water is raised above25°C,
A. the hydronium ion concentration will be greater than thehydroxide ion concentration.
B. the hydronium ion concentration will be less than thehydroxide ion concentration.
C. the value of Kw will increase.
D. the hydronium ion concentration could change to 1.0 ´10¯10M.
E. the hydroxide ion concentration could change to 1.0 ´10¯10M. Explain. Explain.

Explanation / Answer

We Know that :      For the given Reaction :         H2O(aq) + H2O(l)------> H3O+(aq) +OH¯(aq), DH°rxn >0         The ionic productof the water i.e Kw increases with the rise intemperature.

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