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andrew-mc [135]
3 years ago
7

Water is separated into hydrogen and oxygen gas by electrolysis

Chemistry
2 answers:
erma4kov [3.2K]3 years ago
6 0
The answer would be both, because the physical change is liquid to gases, and the chemical change is the molecules being split into hydrogen and oxygen molecules.
almond37 [142]3 years ago
3 0

Answer:

The correct answer is actually B. Chemical Change, I did this myself it's not both trust me.

Explanation:

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If one adds 0.1 mol of the weak acid hf (pk_a = 3.2) to a solution with a ph = 2, which species would be most abundant and how m
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F^{-} is most abundant and 6310 times more than HF.

<h3>What is a strong and weak acid?</h3>

When an acid is dissolved in water, all of its molecules disintegrate, making the acid powerful.

When an acid is dissolved in water, only a small number of its molecules disintegrate, making the acid weak. Strong acids have a lower pH than weak acids.

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Given:

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pH=pka+log \frac{F^{-}}{HF} \\\\7=3.2+log\frac{F^{-}}{HF} \\3.8=log\frac{F^{-}}{HF}\\ \frac{F^{-}}{0.1}=10^{3.8} \\F^{-}=630.95 M

Now,

\frac{F^{-}}{HF}=\frac{630.95}{0.1}\\ =6309.57

F-:HF= 6309.57:1

Therefore, the most abundant is F^{-}and has 6310 times more than HF is F^{-}.

To know more about strong and weak acids, visit: brainly.com/question/12811944

#SPJ4

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