Answer to Question #207932 in General Chemistry for Earl

Question

Identify the acids and bases in each of the following reactions.

1. CN- + H2O <--> HCN + OH-

2. HNO2(aq) + H2O(l) <--> + H3O+ (aq)

3. NH3(aq) + H2O(l) <--> NH4+ (aq) + OH-(aq)

4. H2O + HCI <--> H3O+ + Cl-

5. NH3 + HF <--> NH4+ F

Answer 1

HCN-Acid, OH-Base

when HCl (aq) is added it will form H+ in the solution, So basically we are adding H3O+

So in the above reaction H3O+ added at eqb. , It will react with NO2- , SO more amount of HNO2 will from

So reaction will go in Forward direction (right direction)

Sodium nitrite (NaNO2) is added

Sodium nitrite (NaNO2) is a ionic salt can easily dissociate in to Na+ and NO2-

NO2- added to the system so system will move in that direction that consume the added component

So system wiil go in Backward direction