madam u told in your vedio lesson that metals placed above hydrogen in the displacement series displace hydrogen from acids. then how is copperchloride formed if copper cannot displace hydrogen from HCL?

Asked by archita123 | 17th May, 2015, 05:14: PM

Expert Answer:

Metals like Cu, Hg, Ag, Pt and Au are placed below hydrogen in the reactivity series.

So they do not produce hydrogen on reaction with dilute HCl or conc. HCl.

Copper chloride is formed by treating copper sulphate with sodium chloride.

2NaCl + CuSO4 → CuCl2 +Na2SO4

Answered by Vaibhav Chavan | 18th May, 2015, 11:43: AM