3.改变溶液pH的常用方法
|
pH变化 |
采取的措施 |
|
pH增大 |
加碱 |
|
对于酸性溶液可加水稀释 |
|
|
pH减小 |
加酸 |
|
对于碱性溶液可加水稀释 |
2.pH、CH+与溶液酸碱性的关系
|
PH(250C) |
CH+与C OH-关系(任意温度) |
溶液的酸碱性 |
|
pH<7 |
CH+>COH- |
溶液呈酸性, |
|
pH=7 |
CH+=COH- |
溶液呈中性 |
|
pH>7 |
CH+<COH- |
溶液呈碱性, |
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