Help with a2 chemistry question!!!
This is the questions:
This is the answer:
[OH–] = 2 × 0.0120 = 0.0240
[H+] = 1 x 10^−14 / 0.0240
= 4.166 × 10–13 OR pOH = 1.62
pH = 12.38
My question is why do you have to multiply the concentration of Calcium Hydroxide by 2 in the first step of the answer?
This is the answer:
[OH–] = 2 × 0.0120 = 0.0240
[H+] = 1 x 10^−14 / 0.0240
= 4.166 × 10–13 OR pOH = 1.62
pH = 12.38
My question is why do you have to multiply the concentration of Calcium Hydroxide by 2 in the first step of the answer?
(edited 7 years ago)
Original post by DeadEnd_96
This is the answer:
[OH–] = 2 × 0.0120 = 0.0240
[H+] = 1 x 10^−14 / 0.0240
= 4.166 × 10–13 OR pOH = 1.62
pH = 12.38
[OH–] = 2 × 0.0120 = 0.0240
[H+] = 1 x 10^−14 / 0.0240
= 4.166 × 10–13 OR pOH = 1.62
pH = 12.38
Whats the question asking?
Original post by CERC
Whats the question asking?
This is the question:
This is the answer:
[OH–] = 2 × 0.0120 = 0.0240
[H+] = 1 x 10^−14 / 0.0240
= 4.166 × 10–13 OR pOH = 1.62
pH = 12.38
My question is why do you have to multiply the concentration of Calcium Hydroxide by 2 in the first step of the answer?
Original post by DeadEnd_96
This is the question:
This is the answer:
[OH–] = 2 × 0.0120 = 0.0240
[H+] = 1 x 10^−14 / 0.0240
= 4.166 × 10–13 OR pOH = 1.62
pH = 12.38
My question is why do you have to multiply the concentration of Calcium Hydroxide by 2 in the first step of the answer?
This is the answer:
[OH–] = 2 × 0.0120 = 0.0240
[H+] = 1 x 10^−14 / 0.0240
= 4.166 × 10–13 OR pOH = 1.62
pH = 12.38
My question is why do you have to multiply the concentration of Calcium Hydroxide by 2 in the first step of the answer?
Because there are 2moles of OH in everyone one mole of Ca(OH)2
Does that help you or are you still kind of confused?
(edited 7 years ago)
Original post by CERC
Because there are 2moles of OH in everyone one mole of Ca(OH)2
Ahhh ok. Thanks for your help!
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