\(n_{CaO}=\dfrac{8,4}{56}=0,15mol\)
\(m_{H_2O}=\dfrac{1,8}{18}=0,1mol\)
\(CaO+H_2O\rightarrow Ca\left(OH\right)_2\)
0,15 > 0,1 ( mol )
0,1 0,1 ( mol )
\(m_{Ca\left(OH\right)_2}=0,1.74=7,4g\)
\(n_{CaO}=\dfrac{8,4}{56}=0,15\left(mol\right)\)
\(n_{H2O}=\dfrac{1,8}{18}=0,1\left(mol\right)\)
\(pthh:CaO+H_2O->Ca\left(OH\right)_2\)
LTL : \(\dfrac{0,15}{1}>\dfrac{0,1}{1}\)
=> CaO dư , H2O hết
\(theopthh:n_{Ca\left(OH\right)_2}=n_{H_2O}=0,1\left(mol\right)\)
=>m= \(m_{Ca\left(OH\right)_2}=0,1.74=7,4\left(G\right)\)
