Question

某溶液中OH-物质的量浓度是H+的1000倍,该溶液的pH值为?A.3 B.9 C.8 D.13

Answer 1

[OH-] = 1000[H+]

[H+] = 10^(-14)/[OH-] = 10^(-14)/{1000[H+]} = 10^(-17)/[H+]

[H+]^2 = 10^(-17)

[H+] = 3.16*10^(-9)

pH = 8.5