Pure Energy Basic
Pure Energy Basic
What is the correct answer? Please give an explanation? (10 points and 5 stars guaranteed to the best ans?
Consider the following equilibrium: 2 H2O + energy <=> H3O + + OH ^ - When the pure water has a pH of 7.5, the temperature is ... a. below 25 ° C and the solution is basic. b. below 25 ° C and the solution is neutral. c. above 25 ° C and the solution is basic. d. above 25 ° C and the solution is neutral. e. greater than 25 ° C the solution is acidic.
at 25 ° C, water has a pH of 7 for the pH increase, 7.5 vs 7, that means the H3O + {} should fall right? pH = - Log {} H3O + 10 ^ (-pH) = {} H3O + 10 ^ {-7.5} = 3.16x10 ^ -8 = {} H3O + 10 ^ {-7} = 1x10 ^ -7 = {} H3O + 3.16x10 ^ -8 <1x10 ^ 7 right? now based on the principle of Le Chatelier, if you add or remove a component of a system is in equilibrium, the equilibrium will shift to adjust. in this case, the balance who have moved to the left to reduce the amount of H3O +. To make the shift to the left, you have to remove the heat .. if we add heat, which moves the right to consume that excess heat. Since removing the heat, the temperature would fall. Since the pH is 7.5, is essential. answer is (a)
Cherry Baker - Pilates on a Foam Roller
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