Question

You compare the gas generated from a reaction using two antacid tablets with the gas generated from a reaction using four antacid tablets (consider the antacid to be the limiting reagent). At constant pressure and temperature, how do the volumes of the gases compare?
Question 4 options:

The gas generated by four antacid tablets has a greater volume


The gas generated by two antacid tablets has a greater volume


The two reactions produce the same amount of gas


I don't know

Answer 1

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At constant pressure and temperature, The gas generated by four antacid tablets has a greater volume. The answer should be the first option. 

Answer 2

Answer: The correct answer is the gas generated by four antacid tablets has a greater volume

Explanation:

In the question, it is given that pressure and temperature of the gas remain constant and we need to compare the volume of the gas produced by 4  antacid tablets and 2 antacid tablets.

As, antacid is the limiting reagent. Hence, more the tablets, more gas will be produced.

Hence, more gas will be produced by four antacid tablets than the gas produced by 2 antacid tablets.

To compare the volume, we use Avogadro's Law which states that volume is directly proportional to the number of the gas at constant pressure and temperature.

$V\propto n$     (At constant Temperature and Pressure)

Hence, volume will be greater for the gas produced by four antacid tablets.

Therefore, the correct answer is the gas generated by four antacid tablets has a greater volume