Question

Calculate the weight of copper sulphate formed when 128g of copper is added to conc.h2so4 .what is the volume of so2 librated at stp

Answer 1

Answer:

321.5 g of CuSO4 and 22.4 L of SO2

Explanation:

First of all, the reaction is :

Cu + 2H2SO4(conc.) = CuSO4 + 2H2O + SO2

The gram atomic mass of Cu is 63.5 g.

The gram atomic mass of CuSO4 is 159.5

Therefore,

63.5 g of Cu gives = 159.5 g of CuSO4

so, 128 g of Cu gives = (159.5/63.5) * 128 g of CuSO4

i.e.                               = 321.5 g of CuSO4

Now, 1 mole of any element/compound at STP occupies 22.4 L of that element/compound.

1 mole of Cu gives = 1 mole of SO2

so, 22.4 L of Cu gives = 22.4 L of SO2.

Hope this helps.