a) \(n_{KCl}=\dfrac{7,45}{74,5}=0,1\left(mol\right)\)
=> \(x=V_{dd.KCl}=\dfrac{0,1}{1}=0,1\left(l\right)\)
b) \(n_{CuSO_4.5H_2O}=\dfrac{7,5}{250}=0,03\left(mol\right)\Rightarrow n_{CuSO_4}=0,03\left(mol\right)\)
=> \(y=V_{dd.CuSO_4}=\dfrac{0,03}{0,2}=0,15\left(l\right)\)
\(a,n_{KCl}=\dfrac{7,45}{74,5}=0,1\left(mol\right)\\ V_{dd}=\dfrac{0,1}{1}=0,1\left(l\right)\\ b,n_{CuSO_4}=n_{CuSO_4.5H_2O}=\dfrac{7,5}{250}=0,03\left(mol\right)\\ V_{dd}=\dfrac{0,03}{0,2}=0,15\left(l\right)\)