Calculate the INITIAL pH for a 100.00mL of 0.100M weak monoprotic acid (HA).
The acid dissociation constant (Ka) for the HA is 1.0×10-6
.
If you do it correctly, the initial pH should be equal to 3.50
Calculate the Initial pH?
2015-03-01 8:22 am
回答 (1)
2015-03-01 8:43 am
✔ 最佳答案
Use Ka equation to calculate [H+] Ka = [H+]²/ [HA]
1*10^-6 = [H+]² / 0.1
[H+]² = (1*10^-6)*0.1
[H+]² = 1*10^-7
[H+] = 3.16*10^-4M
pH = -log [H+]
pH = -log ( 3.16*10^-4)
pH = 3.50
收錄日期: 2021-04-21 01:23:40
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