Label each of the following as a strong or weak base (consult Figure 8.2, if nec

Question

Label each of the following as a strong or weak base (consult Figure 8.2, if necessary): KOH CN^- SO_4^2- Identify the conjugate acid-base pairs in each of the following chemical equations: NH_4^+(aq) + CN^- (aq) right and left arrow NH_3(aq) + HCN(aq) CO_3^2-(aq) + HCl (aq) right and left arrow NCO_3^-(aq) + Cl^-(aq) Identify the conjugate acid-base pairs in each of the following chemical equations: HCOOH(aq) + NH_3(aq) right and left arrow HCOO^-(aq) + NH_4^+(aq) HCl(aq) + OH^-(aq) right and left arrow H_2O(l) + Cl^-(aq)

Explanation / Answer

8.32

a) KOH strong, will dissociate completely

b) CN- weak, will accept H+ ions

c) SO4-2 very weak

8.33

NH4+ -> acid

CN- = base

NH3 = conjugate base

HCN conjugate acid

8.34

HCOOH acid

NH3 base

HCOO- conjguate base

NH4+ conjguate acid

HCl = Acid

OH- base

H2O = conjguate acid

Cl- = conjugate base

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