Question

Cantitatea de solutie 10% acid acetic necesara neutralizarii a 28 g oxid de calciu este?

Answer 1

1. Scriie ecuația reacție chimice si afli md CH3-COOH:
2CH3-COOH + CaO ---> (CH3- COO)2Ca + H2O
60*2g.............56g
x=60g........................28g
2. Afli ms din Cp:
Cp=md/ms*100 =>ms=md*100/Cp=60*100/10=600g solutie CH3-COOH
MCH3-COOH=60g/mol
MCaO=56g/mol