Question

Calculati cantitatea de solutie 10,2% KOH necesara pentru a neutraliza 500 g solutie 4,8%
H2SO4.

Answer 1

m=?              24 g

2KOH    +   H2SO4 ----> K2SO4 + 2H2O

112 g/mol      98 g/mol

C = md * 100/ms => 4,8 = md * 100/500 => ms = 24 g H2SO4

m = 27,42 g KOH

C = 10,2 = 27,42 * 100/ms => ms = 268,82 g KOH