Problem: The elemental mass percent composition of ibuprofen (a nonsteroidal anti-inflammatory drug [NSAID]) is 75.69 % C, 8.80 % H, and 15.51 % O.Determine the empirical formula of ibuprofen.

FREE Expert Solution

We’re being asked to determine the empirical formula of ibuprofen, given the mass percent of C, H, and O.


Recall that the empirical formula is the simplest whole-number ratio formula of a compound


For this problem, we need to do the following steps:

Step 1: Calculate the mass and moles of C, H, and O in the compound.

Step 2: Determine the lowest whole number ratio of C, H, and O to get the empirical formula.


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Problem Details

The elemental mass percent composition of ibuprofen (a nonsteroidal anti-inflammatory drug [NSAID]) is 75.69 % C, 8.80 % H, and 15.51 % O.

Determine the empirical formula of ibuprofen.

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What scientific concept do you need to know in order to solve this problem?

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