Question

de trung hoa dung dich 100ml dung dich axit axetic can 200ml dung dich natri hidroxit 0.1M. tinh nong do mol cua axit axetic trong dng dich da su dung

Answer 1

\(n_{NaOH}=C_M\cdot V_{NaOH}=0,2\cdot0,1=0,02\left(mol\right)\)

PTHH:\(CH_3COOH+NaOH\rightarrow CH_3COONa+H_2O\)

Theo PTHH: \(n_{CH_3COOH}=n_{NaOH}=0,02\left(mol\right)\)

Nồng độ mol của axit axetic là:

\(C_{M_{CH_3COOH}}=\dfrac{n_{CH_3COOH}}{V_{CH_3COOH}}=\dfrac{0,02}{0,1}=0,2\left(M\right)\)