7. a) NaHCOs is a weak acid, a weak base, a sticong acid, a strong base (CHOOSE

Question

7. a) NaHCOs is a weak acid, a weak base, a sticong acid, a strong base (CHOOSE ONE) b) The halogen displacement reaction Ch 2 KI2 KCI will happen, will not happen (CHOOSE ONE Note: is a more powerful reducing ageni than Cl c) The metal displacement reaction: Mg +ZnSOA Meso, + Zn will happen , will not happen (CHOOSE ONE) Note: Zn is below Mg in the activity series HCI is: a weak acid, a weak electrolyte, a monoprotic acid, a strong base (CHOOSE ONE) d) e) The reaction HF(aq) H+ (aq) + F (aq) indicates that: HF is a weak acid, HF is a weak base, HF is a strong electrolyte (CHOOSE ONE)

Explanation / Answer

7)

a) NaHCO3 weak base

reason: because it is formed form NaOH and H2CO3

b) will happen

reason : I2 powerful RA than Cl2 . so Cl2 will be reduced by I2

c)   will happen

reason : Mg is strong reducing agent than Zn . so Mg Can displace Zn

d) a monoprotic acid

reason : it is strong monoprotic acid HCl --------------> H+ + Cl-

e) HF is weak acid

reason : weak acid can establish equilibrium

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