a)
Ta có:
\({M_{CuS{O_4}}} = 64 + 32 + 16.4 = 160\)
\( \to \% {m_{Cu}} = \frac{{64}}{{160}} = 40\% ;\% {m_S} = \frac{{32}}{{160}} = 20\% \to \% {m_O} = 40\% \)
Ta có:
\({M_{CuS{O_4}.5CuO}} = 64 + 32 + 16.4 + 5.(64 + 16) = 560\)
\( \to \% {m_{Cu}} = \frac{{64.6}}{{560}} = 68,57\% ;\% {m_S} = \frac{{32}}{{560}} = 5,71\% \to \% {m_O} = 25,72\% \)
b)
Ta có:
\({M_{CuS{O_4}.5{H_2}O}} = 64 + 32 + 16.4 + 5.18 = 250\)
\({m_{CuS{O_4}.5{H_2}O}} = 1{\text{ kg = 1000 gam}}\)
\( \to {n_{CuS{O_4}.5{H_2}O}} = {n_{Cu}} = \frac{{1000}}{{250}} = 4{\text{ mol}}\)
\( \to {m_{Cu}} = 4.64 = 256{\text{ gam}}\)
