At Westonci.ca, we connect you with the answers you need, thanks to our active and informed community. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform. Discover detailed answers to your questions from a wide network of experts on our comprehensive Q&A platform.

Given the balanced equation:
2C + 3H2==> C2H6
What is the total number of moles of C that must completely react to produce 2.0 moles of C2H6?
(1) 1.0 mol (3) 3.0 mol
(2) 2.0 mol (4) 4.0 mol


Sagot :

The answer is (4) 4.0 mol. This is a stoichiometry problem. You start with 2.0 mol of C2H6 and obtain the moles of C by multiplying 2.0 by the mole ratio, in this case 2. 2.0*2=4.0mol.

Answer: The correct answer is option 4.

Explanation:

[tex]2C+3H_2\rightarrow C_2H_6[/tex]

According to the reaction, 1 mol of [tex]C_2H_6[/tex] is obtained from 2 moles of C gives

Then, 2 moles of [tex]C_2H_6[/tex] will be obtained from:

[tex]\frac{2}{1}\times 2[/tex] moles of C =4 moles

Hence, the correct answer is option 4.