Alkali metals = Group 1A
Halogens = Group 7A
The ionization of the following acids and bases can be expressed as follows :
(A ) HI + water →← H + (aq) + I -(aq)
(B) KOH + H2O →← K+(aq) + OH- (aq)
(C)HNO2(l) + H2O →← H+(aq) +NO2-(aq)
(D)H2PO4- + H2O →← H + (aq) + HPO4 ^2- (aq)
(E)CHNH2 + H2O→← CH3NH3+(aq) + OH-(aq)
(F)CH3CH2COOH +H2O→←CH3CH2COO-(aq) + H3O+(aq)
Answer:
0.38 moles KCl
Explanation:
(28 g KCl) / (74.55 g/mol KCl) = 0.38 moles KCl
