Question

Which one of these equations represents the reaction of a weak acid with a strong base?

a.h + (aq) + oh– (aq) → h2o(aq)
b.h + (aq) + ch3nh2(aq) → ch3nh3 + (aq)
c.oh– (aq) + hcn(aq) → h2o(aq) + cn– (aq)
d.hcn(aq) + ch3nh2(aq) → ch3nh3 + (aq) + cn– (aq)?

Answer 1

The equation that represents the reaction of a weak acid with a strong base is a.h + (aq) + oh– (aq) → h2o(aq). option a.

Step-by-step explanation:

The equation that represents the reaction of a weak acid with a strong base is option a.h + (aq) + oh– (aq) → h2o(aq). In this equation, h+ (aq) is the weak acid and oh– (aq) is the strong base. They react to form water (h2o(aq)). The equation that represents the reaction of a weak acid with a strong base is option a.h + (aq) + oh– (aq) → h2o(aq). In this equation, h+ (aq) is the weak acid and oh– (aq) is the strong base. They react to form water (h2o(aq)). n this equation, h+ (aq) is the weak acid and oh– (aq) is the strong base. They react to form water (h2o(aq)).

Answer 2

Answer:-

c. OH– (aq) + HCNaq) → H2O(aq) + CN– (aq)

Explanation:-

A strong base is one which is fully dissociated in aqueous solution. So if we are looking for a strong base we should be looking for OH- (aq).

Similarly a strong acid is one which is fully dissociated in aqueous solution. So if we are looking for a strong acid we should be looking for H+ (aq).

The questions is asking for a weak acid and a strong base. So our answer should have a OH- but not a H+ on the left side of the correct answer.

So our only possible answer is option C.