Question
Number of moles and number of molecules in 1.4187 L of SO_2 at STP respectively are:
JEE Main
Chemistry
Some Basic Concepts of Chemistry
2026
JEE Main 2026 (04 April Shift 1)
JEE Main Chemistry Question (2026) — Solution
Options
- A. 0.1266; 3.812 10^ 22
- B. 0.0633; 3.812 10^ 22
- C. 0.1266; 7.6238 10^ 22
- D. 0.0633; 7.6238 10^ 22
Answer
B. 0.0633; 3.812 10^ 22
Step-by-step solution
Volume of SO_2 at STP = 1.4187 L Molar volume of an ideal gas at STP is approximately 22.414 L. Number of moles n = Volume Molar Volume = 1.4187 22.414 = 0.0633 Number of molecules = n N_A Number of molecules = 0.0633 6.022 10^ 23 = 3.812 10^ 22 Answer: 0.0633; 3.812 10^ 22
Related: Chemistry — Some Basic Concepts of Chemistry · All PYQ Banks