水的电离过程为H2O
H+ + OH－，在不同温度下其离子积为：Kw(25℃)＝1×10－14， Kw(35℃)＝2.1 ×10－14。则下列叙述正确的是
| A．c(H+)随着温度的升高而降低 | B．在35℃时，纯水中 c(H+) ＞c(OH－) |
| C．水的电离常数K(25℃)＞K(35℃) | D．水的电离是一个吸热过程 |
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