Question

Avogadro's law relates the volume of a gas to the number of moles of gas when temperature and pressure are constant. According to this law, how would the volume of a gas change if a reaction produced 1 mole of gas from 2 moles of gaseous reactants?
A.The volume would be one-fourth of the original volume.
B. The volume would be four times the original volume.
C. The volume would be two times the original volume.
D. The volume would be one-half of the original volume.

Answer 1

Your Answer Would Be C.

Answer 2

PV=nRT so comparing V and n and treating the others as constants of value 1 we get V=n therefore it’s a direct one to one relationship. So if the n moles goes from 2 to 1 the volume will decrease by factor of 1/2. So the answer is D. Hope this helped you understand the concept! Please rate if if I helped! Thank you so much!!