Question

including all states of matter.A. solid calcium carbonate, CaCO3, reacts with sodium hydroxide (NaOH) to form an aqueous solution of sodium carbonate and calcium hydroxide.

B. when aquous hydrochloric acid (HCl) reacts wth aquous potassium hydroxide (KOH) this neutralization reaction forms water and aquous potassium chloride.

Answer 1

A)

sodium carbonate ---> Na2CO3

calcium hydroxide ---> Ca(OH)2

so

the balanced reaction is

CaC03 (s) + 2NaOH (aq) ----> Na2C03 (aq) + Ca(OH)2 (aq)

ionic reaction is

CaC03 (s) + 2 Na+ + 2 OH- --> 2 Na+ + C032- + Ca+2 + 2OH-

net ionic reaction is

CaC03 (s) ---> Ca+2 (aq) + C032- (aq)

B)

the balanced reaction is

HCl (aq) + KOH (aq) ---> KCl (aq) + H20 (l)

ionic reaction :

H+ + Cl- + K+ + OH- ---> K+ + Cl- + H20 (l)

net ionic reaction :

H+ (aq) + OH- (aq) ----> H20 (l)