168g oxid de calciu reactioneaza cu acidul clorhidric .Se cere:
a)m,n de clorura de calciu formata
b)VHCl
ACa=40
AO=16
ACl=35,5
AH=1
More Questions From This User See All
Show life that you have a thousand reasons to smile
© Copyright 2024 DOKU.TIPS - All rights reserved.
Răspuns:
-calculez nr.moli CaO, stiind miu CaO= 56g/mol
niu=m/miu=168g/56g/mol=3mol
-deduc moli CaCL2 din ecuatia chimica
1mol..........................1mol
CaO + 2HCl----> CaCl2 +H2O
3mol................................x
x=niu= 3mol CaCl2-
- calculez masa CaCl2. stiind miu=111g/mol
m= niuxmiu= 3molx111g/mol=333g
Explicație: