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1. Without doing any calculations, choose the 0.12 M aqueous solutions with a pH

ID: 541117 • Letter: 1

Question

1.

Without doing any calculations, choose the 0.12 M aqueous solutions with a pH between 8 and 12.

(Select all that apply.)

NaF

NH4Cl

HNO2

Ba(OH)2

NaHCO3

Mg(CH3COO)2

none of the above

2.

Without doing any calculations, choose the 0.12 M aqueous solutions with a pH value 12 or higher.

(Select all that apply.)

NaF

HNO2

Mg(CH3COO)2

NaHCO3

NH4Cl

none of the above

Ba(OH)2

Without doing any calculations, choose the 0.12 M aqueous solutions with a pH value 12 or higher.

(Select all that apply.)

NaF

HNO2

Mg(CH3COO)2

NaHCO3

NH4Cl

none of the above

Ba(OH)2

Explanation / Answer

1. Except ammonium chloride and nitrous acids remaining all compounds it's PH between 8 - 12

Sodium floride is salt of weak acid and strong base

Magnesium acetate is salt of weak acid and strong base

Sodium bicarbonate is salt of weak acid and strong base

Barium hydroxide is strong basic nature

Ammonium chloride is salt of strong acid and weak base

Nitrous acid is acidic nature

2. More PH value for barium hyroxide