5CH3OH + 2KMnO4 + 3H2SO4 = 5CH2O + K2SO4 + 2MnSO4 + 8H2O;
CM = n/V, отсюда n KMnO4 = CM*V = 0.1*0.4 = 0.04 моль;
по ур-ю р-ии, n CH2O = n KMnO4*(5/2) = 0.04*(5/2) = 0.1 моль;
m CH2O = 30*0.1 = 3 г.
5CH3OH + 2KMnO4 + 3H2SO4 = 5CH2O + K2SO4 + 2MnSO4 + 8H2O;
CM = n/V, отсюда n KMnO4 = CM*V = 0.1*0.4 = 0.04 моль;
по ур-ю р-ии, n CH2O = n KMnO4*(5/2) = 0.04*(5/2) = 0.1 моль;
m CH2O = 30*0.1 = 3 г.