\(MgO+2HCl\rightarrow MgCl_2+H_2O\)
\(n_{MgCl_2}=\frac{9,5}{95}=0,1\left(mol\right)\)
a) Theo PTHH \(n_{MgO}=n_{MgCl_2}=0,1\left(mol\right)\Rightarrow m=m_{MgO}=0,1\times40=4\left(g\right)\)
b) Lại có \(n_{HCl}=2n_{MgCl_2}=0,2\left(mol\right)\)
\(\Rightarrow V_{HCl}=\frac{0,2}{1}=0,2\left(l\right)=200\left(ml\right)\)
nMgCl2 = 9.5/95 = 0.1 mol
MgO + 2HCl --> MgCl2 + H2
0.1____0.2_______0.1
mMg = 0.1*40 = 4 g
VddHCl = 0.2/1 = 0.2 (l)
MgO + HCl -> MgCl2 + H2O
0,1........0,1.........0,1 (mol)
nMgCl2 = 0,1(mol)
m=0,1.40=4 (g)
VHCl = 0,1 (l)
à nãy quên chưa cân bằng :))
làm lại :))
MgO +2HCl -> MgCl2 + H2O
0,1.........0,2.........0,1
nMgCl2 = 0,1 (mol)
=> mMgO = m = 4 (g)
VHCl = 0,2 (l)
a, nMgCl2= \(\frac{m}{M}\)=\(\frac{9,5}{95}=0,1\)(mol)
CTHH: MgO+2HCl\(\rightarrow\)MgCl2+H2O
MMgO= 0,1.40=4(g)
b,
=>n MgCl2= 0,1 (mol)ư
VHCl=0,2/1=0,2l
PTHH: MgO + 2HCl --> MgCl2 + H2O
Mol: 0,1 0,2 0,1
nMgCl2 = 9,5/95 = 0,1mol
a) mMgO = 0,1*40 = 4g
b)VHCl = 0,2/1 = 0,2l = 200ml