Asked by Charlotte
                Hi,
I am stuck on this question and would appreciate some guidance. The question states " The value of Kw decreases as the temperature decreases. Is the auto-ionization of water an exothermic or endothermic reaction in the forward direction?"
I feel like the answer should be exothermic as I know from studying Le Chatelier's principle that a decrease in temperature favours the reaction to occur in the forward direction. Is that a correct assumption?
            
        I am stuck on this question and would appreciate some guidance. The question states " The value of Kw decreases as the temperature decreases. Is the auto-ionization of water an exothermic or endothermic reaction in the forward direction?"
I feel like the answer should be exothermic as I know from studying Le Chatelier's principle that a decrease in temperature favours the reaction to occur in the forward direction. Is that a correct assumption?
Answers
                    Answered by
            bobpursley
            
    ionization decreases as temp decreases so..
ionization increases as temp increases
water+heat>>ions
endothermic
    
ionization increases as temp increases
water+heat>>ions
endothermic
                    Answered by
            bobpursley
            
    ionization decreases as temp decreases so..
ionization increases as temp increases
water+heat>>ions
endothermic, so decrease in temp favors reverse.
check my logic
    
ionization increases as temp increases
water+heat>>ions
endothermic, so decrease in temp favors reverse.
check my logic
                    Answered by
            bonjo
            
    when temp decreases, water will decrease in solubility or in ionization and the reaction will favour the backward reaction;
H+ + OH- --> H2O
so we know that the backward reaction is endothermic and the forward is exothermic.
    
H+ + OH- --> H2O
so we know that the backward reaction is endothermic and the forward is exothermic.
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