a)CaO +H2O--->Ca(OH)2
Ta có
m\(_{CaO}=\frac{56}{56}=1\left(mol\right)\)
Theo pthh
n\(_{Ca\left(OH\right)2}=n_{CaO}=1\left(mol\right)\)
C\(_{M\left(Ca\left(OH\right)2\right)}=\frac{1}{0,5}=2M\)
b) Ca(OH)2 +2HCl-----> CaCl2 +2H2O
Theo pthh
n\(HCl=2n_{Ca\left(OH\right)2}=0,2\left(mol\right)\)
m\(_{HC_{ }l}=\frac{2.36,5.100}{14,6}=500\left(g\right)\)
Chúc bạn học tốt
a, \(PTHH:CaO+H2O\rightarrow Ca\left(OH\right)2\)
Ta có : nCaO= \(\frac{56}{56}=1\)
=> \(C_{M_{Ca\left(OH\right)2}}=2M\)
b, \(PTHH:Ca\left(OH\right)2+HCl\rightarrow CaCl2+H2O\)
=> nHCl = 0,2 mol
=>mHCl = \(\frac{2.36,5.100}{14,6}=500g\)