Some Basic Concepts in Chemistry: Chemistry | JEE Main
A 300mL bottle of soft drink has 0.2MCO2 dissolved in it. Assuming CO2 behaves as an ideal gas, the volume of the dissolved CO2 at STP is mL. (Nearest integer)
Given : At STP, molar volume of an ideal gas is 22.7Lmol−1
Your answer stays private
What feels right?
Hint 1 of 3
How is the number of moles of dissolved CO₂ calculated from the molarity and solution volume?
No score. Commit to your first instinct. We’ll show what your mind noticed and what it missed.
Type the value - units or words beside it are fine.
Step-by-step solutionView
Correct answer
The volume of dissolved CO₂ at STP is 1362 mL.
Option analysis
Why each option works or fails
Reviewed route
Solution
StepWorking
01given
Volume of solution V=300 mL, concentration of dissolved CO2=0.2 M, molar volume of ideal gas at STP =22.7 L mol−1=22700 mL mol−1.
02find
Volume of dissolved CO2 gas at STP in mL.
03strategise
Calculate the moles of dissolved CO2 using n=M×V(L). Then, multiply moles by the STP molar volume (22.7 L/mol) to determine the volume of CO2 gas, converting to mL.
Modern IUPAC STP defines standard pressure as 1 bar (105 Pa) rather than 1 atm, yielding Vm≈22.7 L/mol. Always prioritize the value given in the question stem.