Ask Question
24 June, 03:21

Determine the empirical formula of the following compound:

A 0.4987-g sample of a compound known to contain only carbon, hydrogen, and oxygen was burned in oxygen to yield 0.9267 g of carbon dioxide and 0.1897 g of water.

+3
Answers (1)
  1. 24 June, 03:38
    0
    The combustion reaction is CHO + O2 = H20 + CO2

    The amount of carbon can be determined by the amount of carbon dioxide.

    moles C = 0.9267 g CO2 / 44 g/mol CO2 = 0.0211 moles C = 0.2327 g C

    The amount of H can be derived from the amount of water

    mole H = 0.1897 g H2O / 18 g / mol H2O = 0.0105 g H

    grams O is 0.4987 - 0.2327 g C - 0.0105 g H = 0.2555 g O.

    transforming the determined masses to moles and dividing each to the least among the three, the emprical formula is C2HO
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Determine the empirical formula of the following compound: A 0.4987-g sample of a compound known to contain only carbon, hydrogen, and ...” in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers