At $${25^ \circ }C$$ and $$730\,mm$$ pressure, $$380\,mL$$ of dry oxygen was collected. If the temperature is constant, what volume will the oxygen occupy at $$760\,mm$$ pressure?
A.
365$$\,mL$$
B.
2$$\,mL$$
C.
10$$\,mL$$
D.
20$$\,mL$$
Answer :
365$$\,mL$$
Solution :
As the temperature is constant, Boyle’s law is applicable.
$$\eqalign{
& {p_1}{V_1} = {p_2}{V_2} \cr
& {V_1} = 380\,mL,\,{p_1} = 730\,mm,\,{V_2} = ? \cr
& {p_2} = 760\,mm \cr
& 730 \times 380 = 760 \times {V_2} \cr
& {V_2} = \frac{{730 \times 380}}{{760}} = 365\,mL \cr} $$
Releted MCQ Question on Physical Chemistry >> States of Matter Solid, Liquid and Gas
Releted Question 1
Equal weights of methane and oxygen are mixed in an empty container at $${25^ \circ }C.$$ The fraction of the total pressure exerted by oxygen is