nMg=4,824=0,2(mol)nMg=4,824=0,2(mol)
PTHH:
Mg+2CH3COOH→Mg(CH3COO)2+H2Mg+2CH3COOH→Mg(CH3COO)2+H2
0,2→0,40,2→0,4 →0,2→0,2 →0,2(mol)→0,2(mol)
a,a,
CMCH3COOH=0,40,2=2(M)CMCH3COOH=0,40,2=2(M)
b,b,
mMg(CH3COO)2=142.0,2=28,4(g)mMg(CH3COO)2=142.0,2=28,4(g)
c,c,
(Phản ứng với 9,2(g)9,2(g) ... gì ?)