Mg + 2HCl -> MgCl2 + H2
nMg=2,4/24=0,1(mol)
Theo PTHH ta có:
nMg=nH2=nMgCl2=0,1(mol)
VH2=22,4.0,1=2,24(lít)
mMgCl2=95.0,1=9,5(g)
a) nMg = 0,1 (mol)
Mg + 2HCl ---> MgCl2 +H2
0,1........................0,1........0,1
b) nH2 = nMg = 0,1 (mol)
=> VH2 (đktc) = 2,24 (l)
c) nMgCl2 = nMg = 0,1 (mol)
=> m muối = 0,1 . 95 = 9,5 (g)
a. Mg + 2HCl --> MgCl2 + H2
b. nMg = \(\dfrac{2,4}{24}\) = \(0,1\) (mol)
nMg = nH2 = \(0,1\) (mol)
VH2 = \(0,1.22,4\) = \(2,24\) (lít)
c. nH2 = nMgCl2 = \(0,1\) (mol)
mMgCl2 = M.n = \(0,1.95=9,5\) (gam)
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