Ask Question
29 October, 18:36

Measurements show that unknown compound X has the following composition: element mass % carbon 63.2%hydrogen 5.31%oxygen 31.6%Write the empirical chemical formula of X?

+2
Answers (1)
  1. 29 October, 21:02
    0
    The empirical formula of X is C8H8O3

    Explanation:

    Step 1: Data given

    Suppose the mass = 100.00 gram

    A compound contains:

    ⇒ 63.2 % carbon = 63.2 grams

    ⇒ 5.31 % hydrogen = 5.31 grams

    ⇒ 31.6 % oxygen = 31.6 grams

    Molar mass of carbon = 12.01 g/mol

    Molar mass of hydrogen = 1.01 g/mol

    Molar mass of oxygen = 16 g/mol

    Step 2: Calculate number of moles

    (63.2 g C) / (12.01 g/mol) = 5.26 mol C arbon

    (5.32 g H) / (1.01 g/mol) = 5.27 mol H ydrogen

    (31.6 g O) / (16.00 g/mol) = 1.975 mol O

    Step 3: Calculate mol ratio

    Divide by the smallest number of moles:

    C: 5.26 / 1.975 = 2.66

    H: 5.27 / 1.975 = 2.67

    O: 1.975/1.975 = 1

    To achieve integer coefficients, we multiply by 3:

    The empirical formula of X is C8H8O3
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Measurements show that unknown compound X has the following composition: element mass % carbon 63.2%hydrogen 5.31%oxygen 31.6%Write the ...” in 📘 Chemistry if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers