Question

400g Hcl reactioneaza cu Mg .Calculati masa si nr de moli de gaz rezultat ajutoorr

Answer 1

Mg + 2 HCl = MgCl2 + H2
M HCl = 1+35,5 = 36,5
M H2 = 2*1 = 2
2*36,5 g HCl........2 g H2
400 g HCl...................x
x =10,958 g H2
n = m/M = 10,958/2 = 5,497 moli H2