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GalinKa [24]
3 years ago
5

What is the empirical formula of a substance that contains 8.33×10−2 mol of carbon, 0.167 mol of hydrogen, and 8.32×10−2 mol of

oxygen?
Chemistry
2 answers:
Olegator [25]3 years ago
6 0
Looks to me like C and O are virtually equal and H is double those, so:

CH_20, which is the empirical formula for carbohydrates.
vfiekz [6]3 years ago
3 0

<u>Answer:</u> The empirical formula for the given compound is CH_2O

<u>Explanation:</u>

We are given:

Moles of carbon = 8.33\times 10^{-2}mol

Moles of hydrogen = 0.167 moles

Moles of oxygen = 8.32\times 10^{-2}mol

To formulate the empirical formula, we need to follow some steps:

  • <u>Step 1:</u> Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 8.32\times 10^{-2} moles.

For Carbon = \frac{8.33\times 10^{-2}}{8.32\times 10^{-2}}=1

For Hydrogen = \frac{0.167}{8.32\times 10^{-2}}=2.01\approx 2

For Oxygen = \frac{8.32\times 10^{-2}}{8.32\times 10^{-2}}=1

  • <u>Step 2:</u> Taking the mole ratio as their subscripts.

The ratio of C : H : O = 1 : 2 : 1

Hence, the empirical formula for the given compound is CH_2O

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