Problem: Propenoic acid, C3H4O2, is a reactive organic liquid that is used in the manufacturing of plastics, coatings, and adhesives. An unlabeled container is thought to contain this liquid. A 0.376-g sample is combusted to produce 0.202 g of water and 0.427 g of carbon dioxide.Calculate the experimental mass % of C and H in the unknown liquid used in the experiment.

🤓 Based on our data, we think this question is relevant for Professor Kizilkaya's class at LSU.

FREE Expert Solution

Experimental mass percent:


%mass=actual mass element mass sample×100


  • Molar mass CO2 = 44.01 g/mol
    • mass C in CO2 = 1 x 12.01 g/mol
  • Molar mass H2O = 18.02 g/mol
    • mass H in H2O = 2 x 1.01 g/mol


mass element = actual mass of cpd x (mass element in cpd/molar mass cpd)

View Complete Written Solution
Problem Details

Propenoic acid, C3H4O2, is a reactive organic liquid that is used in the manufacturing of plastics, coatings, and adhesives. An unlabeled container is thought to contain this liquid. A 0.376-g sample is combusted to produce 0.202 g of water and 0.427 g of carbon dioxide.

Calculate the experimental mass % of C and H in the unknown liquid used in the experiment.

Frequently Asked Questions

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

Our tutors have indicated that to solve this problem you will need to apply the Mass Percent Formula concept. You can view video lessons to learn Mass Percent Formula. Or if you need more Mass Percent Formula practice, you can also practice Mass Percent Formula practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Kizilkaya's class at LSU.