Question

A bottle of cold drink contains 200ml of liquid in which CO2 is 0.1 molar. Suppose CO2 behaves like an ideal gas , the volume of dissolved CO2 at S.T.P is :
A-0.224 L
B-0.448 L
C- 22.4 L
D- 2.24 L
E- 25.5 L

Solution with formula and working . Need it quick :) thanks

Answer 1

Is the answer option B?

Answer 2

Answer: 0.448 L

Explanation:

Molarity is defined as number of moles of solute dissolved per litre of the solution.

$\text {no of moles}={\text{Molarity}\times {\text{Volume in L}}$

Volume = 200 ml = 0.2 L               (1L=1000ml)

$\text {no of moles}={0.1M}\times {0.2L}=0.02moles$

According to Avogadro's law,  1 mole of $CO_2$ occupy 22.4 L at STP.

0.02 moles of $CO_2$ occupy=$\frac{22.4}{1}\times 0.02L=0.448L$ at STP.