更新1:
It should be "strong alkali" instead of strong acid.
pH Calculation
2008-06-03 10:49 pm
Assume a strong acid solution at pH12 be diluted into 2% by DI water, what is the pH of the resulting solution?
回答 (1)
2008-06-03 11:07 pm
✔ 最佳答案
Consider the original alkali:
pH = 12
pOH = 14 - pH = 14 - 12 = 2
[OH-] = 10-pOH = 10-2 = 0.01 M
Consider the diluted solution:
It is diluted into 2%.
[OH-] = 0.01 x 2% = 0.0002 M
pOH = -log[OH-] = -log(0.0002) = 3.7
pH = 14 - pOH = 14 - 3.7 = 10.3
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