Solve the following problems. 1. The concentration of H+ ions in a bottle of table wine was 3.2 x 10-4 M right after the cork was removed. Only half of the wine was consumed. The other half, after it had been standing open to the air for a month, was found to have a H+ion concentration equal to 1.0 x 10-3 M. Calculate the pH of the wine on each of these occasions. 2. The pH of rainwater collected in ANHS on a particular day was 4.82. Calculate the H+ ion concentration of the rainwater. 3 Find the nH if the [OH-] is equal to 10x 10-6

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1. Given [H*]= 3.2 x 10-4 M, Find PH
Given [H] = 1.0 x 10-³ M,
-3 Find PH
2. Given: PH=4.82, Find [H*]
3. Given: [OH-] = 1.0 x 10-6 M, Find PH
Step 2
1. (a) On first ocassion:
PH= -log₁0[H+] = -log₁0[3.2 x 10-4] = 3.5 (Answer)
(a) On second ocassion:
PH= -log₁0[H*] = -log₁0[1.0 x 10-³] = 3.0 (Answer)
2) PH= -log₁0[H*]
4.82 = -log10[H*]
[H] = 10-4.82 1.51 X 10-5 M (Answer)
=
3)
Given: [OH-] = 1.0 x 10-6 M
POH = -log₁0[OH-] = -log₁0[1.0 X 106] = 6
PH+POH =14
PH + 6 = 14
PH = 14-6-8 (Answer)
Transcribed Image Text:1. Given [H*]= 3.2 x 10-4 M, Find PH Given [H] = 1.0 x 10-³ M, -3 Find PH 2. Given: PH=4.82, Find [H*] 3. Given: [OH-] = 1.0 x 10-6 M, Find PH Step 2 1. (a) On first ocassion: PH= -log₁0[H+] = -log₁0[3.2 x 10-4] = 3.5 (Answer) (a) On second ocassion: PH= -log₁0[H*] = -log₁0[1.0 x 10-³] = 3.0 (Answer) 2) PH= -log₁0[H*] 4.82 = -log10[H*] [H] = 10-4.82 1.51 X 10-5 M (Answer) = 3) Given: [OH-] = 1.0 x 10-6 M POH = -log₁0[OH-] = -log₁0[1.0 X 106] = 6 PH+POH =14 PH + 6 = 14 PH = 14-6-8 (Answer)
Solve the following problems.
1. The concentration of H+ ions in a bottle of table wine was 3.2 x 10-4 M right after the cork was removed. Only half of
the wine was consumed. The other half, after it had been standing open to the air for a month, was found to have a H+ion
concentration equal to 1.0 x 10-3 M. Calculate the pH of the wine on each of these occasions.
2. The pH of rainwater collected in ANHS on a particular day was 4.82. Calculate the H+ ion concentration of the
rainwater.
3. Find the pH if the [OH-] is equal to 1.0 x 10-6 M.
Transcribed Image Text:Solve the following problems. 1. The concentration of H+ ions in a bottle of table wine was 3.2 x 10-4 M right after the cork was removed. Only half of the wine was consumed. The other half, after it had been standing open to the air for a month, was found to have a H+ion concentration equal to 1.0 x 10-3 M. Calculate the pH of the wine on each of these occasions. 2. The pH of rainwater collected in ANHS on a particular day was 4.82. Calculate the H+ ion concentration of the rainwater. 3. Find the pH if the [OH-] is equal to 1.0 x 10-6 M.
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