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viva [34]
3 years ago
11

A solution with a pH = 13 has approximately how many moles of OH– ions per liter?

Chemistry
2 answers:
GuDViN [60]3 years ago
6 0

Answer :

(A) The number of moles of OH^- ions per liter is, 0.1 moles/L

(B) The number of molecules of H^+ ion is, 6.022\times 10^{10}

(C) The pH of the solution will be, 4

<u>Solution for part A :</u>

First we have to calculate the pOH of the solution.

As we know that,

pH+pOH=14\\\\13+pOH=14\\\\pOH=1

Now we have to calculate the moles of OH^- ion per liter.

pOH=-\log [OH^-]\\\\1=-\log [OH^-]

[OH^-]=0.1moles/L

<u>Solution for part B :</u>

First we have to calculate the H^+ ion concentration.

pH=-\log [H^+]\\\\13=-\log [H^+]

[H^+]=10^{-13}moles/L

Now we have to calculate the number of molecules of H^+ ion

As, 1 mole contains 6.022\times 10^{23} number of molecules of H^+ ion

So, 10^{-13} moles contains 6.022\times 10^{23}\times 10^{-13}=6.022\times 10^{10} number of molecules of H^+ ion

<u>Solution for part C :</u>

pH=-\log [H^+]\\\\pH=-\log (1\times 10^{-4})

pH=4

nata0808 [166]3 years ago
6 0

Answer:

Part 1--0.1

Part 2--0.0000000000001

Part 3--4

Explanation:

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