Question

a) Predict in which direction the following reactions will proceed. Justify your answers briefly.

I. HCl + NaF ---- HF + NaCl

II. AlBr3 + 3 NaF ---- AlF3 + 3 NaBr

III. Ti(OMe)4 + 2 TiBr2 ---- TiBr4 + 2 Ti(OMe)2

IV. SrS + HgO ---- SrO + HgS

V. [Pt(CN)4] 2- + 4 NaCl ---- [PtCl4] 2- + 4 NaCN

VI. CoCl2 + CdI2 ---- CoI2 + CdCl2

VII. [Ag(NH3)2]NO3 + 2 NaSCN ---- NaNO3 + Na[Ag(SCN)2] + 2 NH3

Answer 1

I. HCl + NaF ---- HF + NaCl   reactant side shift . HCl and NaF are strong electrolytes. So they are completely ionisable.

II. AlBr3 + 3 NaF ---- AlF3 + 3 NaBr   reactant side shift . AlBr3 and NaF are strong electrolytes. so they are completely ionisable.

III. Ti(OMe)4 + 2 TiBr2 ---- TiBr4 + 2 Ti(OMe)2    no direction. Both reactants and products are strong reactants.

IV. SrS + HgO ---- SrO + HgS                                no direction. Both reactants and products are strong reactants.

V. [Pt(CN)4] 2- + 4 NaCl ---- [PtCl4] 2- + 4 NaCN     products side shift. NaCN is weak electrolyte.

VI. CoCl2 + CdI2 ---- CoI2 + CdCl2                        No direction . Both reactants and products are strong reactants.

VII. [Ag(NH3)2]NO3 + 2 NaSCN ---- NaNO3 + Na[Ag(SCN)2] + 2 NH3   products side shift.