Respuesta :
Answer:
Explanation:
CuSO₄(aq) + 4NH₃(aq) --> [Cu(NH₃)₄]SO₄(aq)
1 mole of copper sulphate reacts with 4 moles of ammonia
molecular weight of copper sulphate = 17 g
4.3 g of copper sulphate = 4.3 / 17 = .253 moles of copper sulphate
so with .253 moles of copper sulphate will react .253 x 4 = 1.012 moles of ammonia.
The number of moles of ammonia i.e. needed is 1.012 moles.
Calculation of the number of moles of ammonia:
The following chemical equation should be considered.
CuSO₄(aq) + 4NH₃(aq) --> [Cu(NH₃)₄]SO₄(aq)
It means that 1 mole of copper sulfate reacts with 4 moles of ammonia
Here, molecular weight of copper sulfate = 17 g
Also,
4.3 g of copper sulphate =should be
4.3 / 17
= .253 moles of copper sulphate
Now the total number of moles should be
= .253 x 4
= 1.012 moles of ammonia.
hence, The number of moles of ammonia i.e. needed is 1.012 moles.
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