Question

Will these reactions yield an acidic, basic or neutral solution?

Answer 1

We assume one equiv EACH of the given reagents.........

Explanation:

And thus for `a.,b.,c.` we gets acidic, slightly basic, and basic solutions.

And we should write the stoichiometric equations:

`a.` `H_2SO_4(aq) +NH_3(aq) rarr NH_4^+ + HSO_4^-`

The solution is ACIDIC because of the acidity of both bisulfate and ammonium ions:

`HSO_4^(-) +H_2O rightleftharpoons H_3O^+ + SO_4^(2-)`

`b.` `HCO_2H(aq) +KOH(aq) rarr HCO_2^(-)K^+ + H_2O(l)`

and potassium formate gives a slightly basic solution.......

`K^+HCO_2^(-) +H_2O rightleftharpoons HCO_2H(aq) + KOH(aq)`

The solution is ALKALINE because of the basicity of the formate ions.

`(c)` `CaCO_3(s) + HNO_3(aq) rightleftharpoons [CaHCO_3]^ + +NO_3^(-) +H_2O`

The solution should be more or less neutral.