CHEMISTRY
REVISION QUESTIONS
1. A 10.00 g sample of a soluble barium salt is treated with an excess
of sodium sulfate to precipitate 11.21 g BaSO4 (M = 233.4).
Which barium salt is it?
(a) BaCl2 (M = 208.2)
(b) Ba(O2CH)2 (M = 227.3)
(c)Ba(NO3)2 (M = 261.3)
(d)BaBr2 (M = 297.1)
2. What is the concentration of nitrate ion in a 425 mL solution
containing 32.0 g of Mg(NO3)2 (M = 148.3)?
(A) 0.216 M (B) 0.432 M
(C) 0.508 M (D) 1.02 M
3. Which calcium compound is not appreciably more soluble in 0.1
M hydrochloric acid than it is in pure water?
(A) Slaked lime, Ca(OH)2
(B) Hydroxyapatite, Ca5(OH)(PO4)3
REVISION QUESTIONS
1. A 10.00 g sample of a soluble barium salt is treated with an excess
of sodium sulfate to precipitate 11.21 g BaSO4 (M = 233.4).
Which barium salt is it?
(a) BaCl2 (M = 208.2)
(b) Ba(O2CH)2 (M = 227.3)
(c)Ba(NO3)2 (M = 261.3)
(d)BaBr2 (M = 297.1)
2. What is the concentration of nitrate ion in a 425 mL solution
containing 32.0 g of Mg(NO3)2 (M = 148.3)?
(A) 0.216 M (B) 0.432 M
(C) 0.508 M (D) 1.02 M
3. Which calcium compound is not appreciably more soluble in 0.1
M hydrochloric acid than it is in pure water?
(A) Slaked lime, Ca(OH)2
(B) Hydroxyapatite, Ca5(OH)(PO4)3
