Mg từ đâu ra vậy bạn.
\(a)\)
\(n_{CuSO_4}=0,5\left(mol\right)\)
\(CuSO_4\left(0,5\right)--->Cu^{2+}\left(0,5\right)+SO_4^{2-}\left(0,5\right)\)
\(\Rightarrow\left\{{}\begin{matrix}\left[Cu^{2+}\right]=\dfrac{0,5}{0,5}=1M\\\left[SO_4^{2-}\right]=\dfrac{0,5}{0,5}=1M\end{matrix}\right.\)
\(b)\)
\(Cu^{2+}\left(0,5\right)+2OH^-\left(1\right)--->Cu\left(OH\right)_2\downarrow\)
\(n_{OH^-}=0,1\left(mol\right)\)
\(\Rightarrow V_{ddKOH}=\dfrac{1}{0,5}=2\left(l\right)\)
\(c)\)
\(Ba^{2+}\left(0,5\right)+SO_4^{2-}\left(0,5\right)--->BaSO_4\downarrow\)
\(n_{Ba^{2+}}=0,5\left(mol\right)\)
\(\Rightarrow V_{ddBaCl_2}=\dfrac{0,5}{0,25}=2\left(l\right)\)
