Question

Cați moli de acid sulfuric reactioneaza cu 3 moli Al? Cate grame de sare se obțin? Cati moli de gaz se degaja?
REPEDEEE!!!!
DAU COROANA

Answer 1

2 Al + 3 H2SO4 = Al2(SO4)3 + 3 H2
M Al2(SO4)3 = 342 g/mol
2 moli Al.........3 moli H2SO4.........342 g Al2(SO4)3...............3 moli H2
3 moli Al..................x........................y...........................................z
x = 4,5 moli acid sulfuric
y = 513 g sulfat de aluminiu
z = 4,5 moli hidrogen