History, 05.07.2021 16:30 zozo9987

TTC8. Trộn 3 dung dịch H2SO4 0,1M, HNO3 0,2M và HCl 0,3M với những thể tích như nhau thu được dung dịch A. Lấy 300 ml dung dịch A cho tác dụng với dung dịch B
gồm NaOH 0,2M và KOH 0,29M. Thể tích dung dịch B (theo ml) cần dùng để sau khi
tác dụng với 300ml dung dịch A thu được dung dịch có pH=2 là:
A.150
B. 200
C. 134
D. 143.

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TTC8. Trộn 3 dung dịch H2SO4 0,1M, HNO3 0,2M và HCl 0,3M với những thể tích như nhau thu được dung...

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