What mass of sodium carbonate solution is in 500 cm3 of 0.1 molar sodium carbonate solution?

(Na = 23, C = 12, O = 16)

  • A 10.6 g
  • B 5.3 g
  • C 500 g
  • D 10 g
  • E 20 g
jamb 1981chemistry

The correct answer is B. 5.3 g

106 gm Na2CO3 in 1000 cc = 1m

53 gm Na2CO3 in 500 cc = 1m

For 0.1 molar we have (53)/(10) = 5.3

Previous question Next question