What color will the litmus be painted in aqueous solutions: Li2CO3; CdCl2; NaBr?

univerkov | May 2, 2021 | education

What color will the litmus be painted in aqueous solutions: Li2CO3; CdCl2; NaBr? Make up the molecular and ionic equations for the reactions of the first stage of salt hydrolysis.

1.Li2CO3 + H2O = LiOH + LiHCO3

2Li + + CO32- + H2O = 2Li + + OH- + HCO3-

CO32- + H2O = HCO3- + OH-

Litmus turns blue.

2. CdCl2 + H2O = Cd (OH) Cl + HCl

Cd2 + + 2Cl- + H2O = CdOH- + 2Cl- + H +

Cd2 + + H2O = CdOH- + H +

Litmus turns red

3. NaBr does not undergo hydrolysis. The litmus will remain purple.

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