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  • 12-02-2018
  • Chemistry
contestada

Calculate the theoretical mass % of C and H in propenoic acid.

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Dejanras
Dejanras Dejanras
  • 21-02-2018
M(propenoic acid - C₃H₄O₂) = 72 g/mol.
ω(C) = M(C) ÷ M(C₃H₄O₂) · 100%.
ω(C) = 3 · 12 g/mol ÷ 72 g/mol · 100%.
ω(C) = 36 g/mol ÷ 72 g/mol · 100%.
ω(C) = 50%.
ω(H) = M(H) ÷ M(C₃H₄O₂) · 100%.
ω(H) = 4 · 1 g/mol ÷ 72 g/mol · 100%.
ω(H) = 4 g/mol ÷ 72 g/mol · 100%.
ω(H) = 5,55 %.
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