The Equilibrium Constant for the Autonionization of Water (Shown Below)increases

question 53

Multiple Choice

The equilibrium constant for the autonionization of water (shown below) increases with increasing temperature,from 1.01 x10^-14 at 25°C to 5.31 x10^-14 at 50°C.
H₂O(l) + H₂O(l)
H₃O⁺(aq) + OH^-(aq)
Which of the following statements is consistent with this behaviour?

• A)The autoionization of water is an endothermic reaction.
• B)The autoionization of water is an exothermic reaction.
• C)The hydronium ion concentration at equilibrium increases with increasing temperature.
• D)The hydronium ion concentration at equilibrium decreases with increasing temperature.
• E)Both A and C.

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