Chlorides (CL-)

They are produced by the action of hydrogen chlorides on metals.

Mg(s) + 2HCL(aq)  →  MgCL2 + H2(g)

Action of acids on bases (neutralization)

NaOH(aq) + HCL(aq) →  NaCL(aq) + H2O(L)

Test for Chlorides CL

With AgNO3 (i.e Silver trioxonitrate (v).

AgNO3(aq) + NaCL3(aq)  →  NaNO3(aq)+ AgCL(s)

A white precipitate of AgCL is formed which readily dissolves in acqueous ammonia.

PbNO3(aq)+ NaCL(aq) →   NaNO3(aq)+ PbCL2(s)

A white precipitate of PbCL 2 is forned.

NB: All chlorides are stable to heat (i.e cannot be decomposed by heating ) except NH4CL which sublimes.

All chlorides are soluble except AgCL, pbCL2 and HgCL.

Leave a Comment

not allowed!