Question

Write net ionic equations to show what happens when a. aqueous HCl is added to aqueous potassium nitrite b. aqueous sodium hydroxide is added to aqueous methylamine hydrochloride c. aqueous sodium hydroxide is added to aqueous nitrous acid

Answer 1

A) KNO₃ (aq) + HCl (aq) ---> KCl (aq) + HNO₃ (aq)

the overall ionic reaction is:

K+(aq) + NO3- (aq) + H+ (aq) + Cl- (aq) ---> K+(aq) + Cl -(aq) + H+(aq) + NO3 -(aq)

B) CH3NH3Cl (aq) + NaOH (aq)-->NaCl (aq) + CH3NH3.H2O

=> CH₃NH₃⁺ + Cl^- + Na⁺ + OH^- -----> Na⁺(aq) + Cl^-(aq) + CH₃NH₃⁺(aq) + H⁺(aq)

C) the overall ionic reaction is:

Na(+1)(aq) + OH(-1)(aq) + H(+1)(aq) + NO3(-1)(aq) <-> Na(+1)(aq) + NO3(-1)(aq) +H2O(0)(l)

=> OH(-1)(aq) + H(+1)(aq) => H2O(l)