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2.0g of a monobasic acid was made up to 250 cm3 with distilled water. 25.00...

Chemistry
JAMB 1990
2.0g of a monobasic acid was made up to 250 cm3 with distilled water. 25.00 cm3 of this solution required 20.00cm3 of 0.1 M NaOH solution for complete neutralization. The molar mass of the acid is?
  • A. 200 g
  • B. 160 g
  • C. 100 g
  • D. 50 g
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Correct Answer: Option C
Explanation
Ma = (MbVb)/(Va) = (0.1 m χ 20 cm3)/(25cm) = 0.08 m

M = (concentration in g/dm3)/(m) = (8)/(0.08) = 100 g
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