游客
题文

下列有关电解质溶液中微粒的物质的量浓度关系正确的是

A.0.1 mol·L-1的NH4Cl溶液中:c(Cl)>c(NH4+)>c(OH)>c(H)
B.将醋酸钠、盐酸两溶液混合后,溶液呈中性,则混合后的溶液中:c(Na+)>c(Cl)
C.已知Ka(HF)=7.2×10-4,Ka(HCN)=6.2×10-10,等体积等浓度的NaF、NaCN溶液中,前者离子总数小于后者
D.浓度均为0.1 mol·L-1的①(NH4)2CO3 ②(NH4)2SO4 ③(NH4)2Fe(SO4)2溶液中,c(NH4+)的大小顺序为:③>②>①
科目 化学   题型 选择题   难度 中等
登录免费查看答案和解析
相关试题

What I need is_____ book that contains ______ABC of oil painting.

A.a; 不填 B.the; 不填 C.the; an D.a ; the

Jenny nearly missed the flight______ doing too much shopping.

A.as a result of B.on top of C.in front of D.in need of

The CDs are on sale! Buy one and you get ______ completely free.

A.other B.others C.one D.ones ks

I’m sure that your letter will get______ attention. They know you’re waiting for the reply.

A.continued B.immediate C.careful D.general

All the dishes in this menu, ______ otherwise stated, will serve two to three people.

A.as B.if C.though D.unless

Copyright ©2020-2025 优题课 youtike.com 版权所有

粤ICP备20024846号