Post Assessment

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Maggie Doan 1I
Posts: 61
Joined: Fri Sep 28, 2018 12:24 am

Post Assessment

Postby Maggie Doan 1I » Mon Jan 21, 2019 5:49 pm

Determine the shift in equilibrium, if any, which will occur for the following reactions when the temperature is increased
a) Photosynthesis:
6 CO2 (g) + 6 H2O (l) ⇌ C6H12O6(s) + 6 O2 (g) delta H° = +2802 kJ.mol-1
b) The hydrolysis of ATP:
ATP (aq) + H2O (l) ⇌ ADP + PO42-(aq) delta H° = -30 kJ.mol-1

Aren't these both exothermic reactions if the temperature increases or does it depend on the delta H?

Rimsha Hussaini 1A
Posts: 31
Joined: Fri Sep 28, 2018 12:20 am

Re: Post Assessment

Postby Rimsha Hussaini 1A » Mon Jan 21, 2019 6:11 pm

Whether or not a reaction is exothermic depends on the delta H. If the delta H is positive, then the reaction is endothermic. If the delta H is negative, then the reaction is exothermic.
For an endothermic reaction, if the temperature is increased, the forward reaction is favored and the equation will shift towards the products.
For an exothermic reaction, if the temperature is increased, the reverse reaction is favored and the equation will shift towards the reactants.


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