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

Chemistry
JAMB 1981
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
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Correct Answer: Option B
Explanation
106 gm Na2CO3 in 1000 cc = 1m
53 gm Na2CO3 in 500 cc = 1m
For 0.1 molar we have (53)/(10) = 5.3
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