Calculate the mass of copper oxide required to produce 24.95 g of copper sulfate crystals (CuSO4.5H2O).
Given the equation for the reaction:CuO(s) + H2SO4(aq)-------> CuSO4(aq) + H2O(l) and the relative formula mass of the copper sulfate crystals Mr=249.5 and the relative atomic masses of O=16 and Cu=63.5From the reaction equation we can see there is a 1:1 molar ratio between CuO and CuSO4. From the information given we can work out the moles of CuSO4 using the equation mass = Mr x Moles. We find that there are 0.1 moles of CuSO4 therefore 0.1 moles of CuO must have reacted to produce this. Using the mass =MrxMoles equation again and calculating the Mr of CuO (16+63.5=79.5) we get that the mass of CuO is 7.95g.
JH
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