Question

1. Will the pH of the following compounds be less than 7, greater than 7, or approximately equal to 7?

A) ammonium chloride

B) barium fluoride

C) potassium nitrate

D) sodium bromide

2. Will the pH of the following compounds be less than 7, greater than 7, or approximately equal to 7?

A) ammonium iodide

B) barium nitrite

C) barium bromide

D) ammonium chloride

Answer 1

1)

A)

NH4Cl is salt of weak base and Strong acid (HCl)

Only acid is strong

So, the salt NH4Cl is acidic

So, pH will be less than 7

B)

BaF2 is salt of Strong base (Ba(OH)2) and weak acid

Only base is strong

So, the salt BaF2 is basic

So, pH will be greater than 7

C)

KNO3 is salt of Strong base (KOH) and Strong acid (HNO3)

Both acid and base are strong

So, the salt KNO3 is neutral

pH will be 7

D)

NaBr is salt of Strong base (NaOH) and Strong acid (HBr)

Both acid and base are strong

So, the salt NaBr is neutral

pH will be 7

I am allowed to answer only 1 question at a time