Question

4. A student was given the following question: How many Liters are there in 32 g of Cl2 gas? The student gave the following work: 32 g Cl2/1 x 22.4 Cl2/ 1 mole Cl2=716.8 moles Cl2 Is the students work correct? If yes, explain why. If no, show the correct work, answer and units. Answer:

Answer 1

Well, if you solve the equation, you'll be able to determine the amount of liters in Cl₂ gas.

First, lets convert 32g of Cl₂ to moles.

To convert to moles, we would find the GFM.

The GFM of Cl₂ is 70g/mol.

Since we are given the grams, we could find the moles by dividing
32g
--------= .457mol
70g/mol

After converting to moles, we could now convert the number of moles to liters.

(.457mol)(22.4L)= 10.23L

After finding the answer and analyzing the student's steps, we could determine that the student is incorrect because the amount of moles in Cl₂ is .457 moles not, 716.8 moles.