下列有关10ml 0.1mol/l ch3cooh溶液和100ml 0.01mol/l ch3cooh溶液说法正确的是
A二者ph前者小于后者
B与nahco3反应时 出co2的速率相同
C溶液中所含ch3cooh的物质的量相同
D与足量Zn反应时 出h2的量前者大于后者
常温下 将ph=12的naoh溶液和ph=10的氢氧化钠溶液混合、若混合后溶液的ph=11,则二者的体积比是
A 1:20 B1:10 C1:1 D10:1
第一题C为什么不对
人气:109 ℃ 时间:2020-03-21 13:41:19
解答
A
B
ch3cooh 电离,产生离子
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