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An organic compound contains 72% carbon, 12% hydrogen and 16% oxygen by mass. What is...

Chemistry
WAEC 2019

An organic compound contains 72% carbon, 12% hydrogen and 16% oxygen by mass. What is the empirical formula of the compound?

[ H = 1.0. C = 12.0, O = 16.0 ]

  • A. C\(_3\)H\(_8\)O
  • B. C\(_6\)H\(_{12}\)O
  • C. C\(_6\)H\(_{12}\)O\(_2\)
  • D. C\(_{12}\)H\(_{12}\)O\(_{11}\)
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Correct Answer: Option B
Explanation

C = 72 / 12       H = 12 / 1       O = 16 / 16

C = 6               H = 12             O = 1

: EMPIRICAL FORMULA

C\(_6\)H\(_{12}\)O

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