pH=6.98
Explanation:
This is a very interesting question because it tests your understanding of what it means to have a dynamic equilibrium going on in solution.
As you know, pure water undergoes self-ionization to form hydronium ions, H3O+, and hydroxide anions, OH−.
2H2O(l]⇌H3O+(aq]+OH−(aq]→ very important!
At room temperature, the value of water's ionization constant, KW, is equal to 10−14. This means that you have
KW=[H3O+]⋅[OH−]=10−14
Since the concentrations of hydronium and hydroxide ions are equal for pure water, you will have
[H3O+]=√10−14=10−7M
The pH of pure water will thus be
pH=−log([H3O+])
pH=−log(10−7)=7
Now, let's assume that you're working with a 1.0-L solution of pure water and you add some 10
Free energy is the answer i hope this helped
(b) boiling of water is an endothermic process.
A response that is chemical in nature and is characterized with the aid of the release of power in the shape of warmth or light is referred to as an exothermic response. Matching a mild using a matchstick is one example of this kind of reaction where the discharge is inside the shape of each warmness and light.
Endothermic reactions are chemical reactions wherein the reactants soak up warmness electricity from the environment to shape products. those reactions decrease the temperature of their surrounding place, thereby growing a cooling impact.
Learn more about exothermic here:- brainly.com/question/2924714
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DISCLAIMER:- Your question is incomplete , see full question below:-
Classify the following processes as exothermic or endothermic:
(a) freezing of water.
(b) boiling of water.
(c) digestion of food.
(d) a person running.
(e) a person growing.
(f) wood being chopped.
(g) heating with a furnace.
Answer: R
Explanation: is polarized to the right
