Homework Help: Chemistry

Posted by Jessica on Wednesday, March 21, 2012 at 10:17am.

Consider the equation: A + 4B=3C+3D, when equal masses of A and B are reacted, which is limiting?
My possible answers are:
A)if the molar mass of A is less than the molar mass of B, then B must be limiting.
B) If the molar mass of A is greater than the molar mass of B, then A must be limiting.
C) If the molar mass of A is greater than the molar mass of B, then B must be limiting.
D) If the molar mass of A is less than the molar mass of B, then A must be limiting.
E) neither reactant is limiting

I am pretty sure the answer is D. I understand that a limiting reactant is the reactant that runs out first and limits the amount of prodct that can form. Please help!

Chemistry - DrBob222, Wednesday, March 21, 2012 at 2:39pm
Test answer
Chemistry - DrBob222, Wednesday, March 21, 2012 at 2:44pm
Another test answer. My work is not posting.
Chemistry - DrBob222, Wednesday, March 21, 2012 at 2:49pm
Answer D is not correct.
Chemistry - DrBob222, Wednesday, March 21, 2012 at 2:50pm
Try assigning numbers.
10 g A
10 g B
molar mass A = 10
molar mass B = 20

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