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82问答网 > 【求过程！！】（1）100ml 0.1mol⼀L HCL溶液的PH=__, 100ml 0.1mol⼀L NaOH溶液的PH=__,

【求过程！！】（1）100ml 0.1mol⼀L HCL溶液的PH=, 100ml 0.1mol⼀L NaOH溶液的PH=,

2025-03-16 16:13:56

推荐回答（1个）

回答1：

当溶液的ph为7时，则说明该溶液呈中性，所以要使溶液的ph变成7，即要用naoh将hcl全部中和（即它们完全反应，反应后既无氢氧化钠剩余也无盐酸剩余）
有题可知：溶液中有盐酸
0.1×0.1=0.01
mol
根据
naoh
+
hcl
→
nacl
+
h2o
所以需要氢氧化钠
40×
0.01
=0.4
g

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