\(Cu\left(NO_3\right)_2\rightarrow CuO+2NO_2+\dfrac{1}{2}O_2\)
188 88 \(\rightarrow\) giảm 108(g)\(\Leftrightarrow1\left(mol\right)\)
giảm 54 \(\Leftrightarrow a\left(mol\right)\)
\(\Leftrightarrow108a=54\Leftrightarrow a=0,5\)
\(n_{Cu\left(NO_3\right)_2}=n_{CuO}=0,5\left(mol\right)\)
\(\rightarrow m_{Cu\left(NO_3\right)_2}=0,5.188=94\left(g\right)\)
\(n_{NO_2}=2n_{CuO}=1\left(mol\right);n_{O_2}=\dfrac{1}{2}n_{CuO}=0,25\left(mol\right)\)
\(\rightarrow V_k=22,4.\left(1+0,25\right)=28\left(l\right)\)