2CH3COOH + 2Na -> 2CH3COONa + H2↑
w(CH3COOH) = (m(CH3COOH)/mp-pa(CH3COOH))*100%
m(CH3COOH) = mp-pa(CH3COOH)*w(CH3COOH)/100% = 40*15%/100% = 6(г)
n(CH3COOH) = m(CH3COOH)/M(CH3COOH) = 6/60 = 0,1(моль)
по уравнению реакции n(Na) = n(CH3COOH) = 0,1(моль)
m(Na) = n(Na)*M(Na) = 0,1*23 = 2,3(г)
Ответ: m(Na) = 2,3 г
2CH3COOH + 2Na -> 2CH3COONa + H2↑
w(CH3COOH) = (m(CH3COOH)/mp-pa(CH3COOH))*100%
m(CH3COOH) = mp-pa(CH3COOH)*w(CH3COOH)/100% = 40*15%/100% = 6(г)
n(CH3COOH) = m(CH3COOH)/M(CH3COOH) = 6/60 = 0,1(моль)
по уравнению реакции n(Na) = n(CH3COOH) = 0,1(моль)
m(Na) = n(Na)*M(Na) = 0,1*23 = 2,3(г)
Ответ: m(Na) = 2,3 г