QJEEM21Ch1ce5: JEE Main 2021 Chemistry - Class 11 JEEM21Ch1ce5 Solution: The number of chlorine atoms in 20 mL of chlorine gas at STP is …

Question

Verified Solution • 2025–26 Session moderate

QJEEM21Ch1ce5: JEE Main 2021 Chemistry - Class 11 JEEM21Ch1ce5 Solution: The number of chlorine atoms in 20 mL of chlorine gas at STP is …

The number of chlorine atoms in 20 mL of chlorine gas at STP is _________ 10²¹. (Round off to the Nearest Integer).

[Assume chlorine is an ideal gas at STP

R = 0.083 L bar mol^{$-$ 1} K^{$-$ 1}, N_A = 6.023

\times

10²³]

Related Learning Resources & Exam Preparation

JEE Main PYQ Question Bank

Browse year-wise authentic previous years' questions with solutions

Authentic CBT Mock Tests

Simulate official exam environment with live timer and percentile scoring

Accepted Answer

n = \frac{P V}{R T}

= \frac{1 \times 20 \times 10^{- 3}}{0.083 \times 273}

No. of atoms =

= \frac{1 \times 20 \times 10^{- 3}}{0.083 \times 273} \times 2 \times 6.023 \times 10^{23}

= 1.06 \times 10^{21}

QJEEM21Ch1ce5: JEE Main 2021 Chemistry - Class 11 JEEM21Ch1ce5 Solution: The number of chlorine atoms in 20 mL of chlorine gas at STP is …

Step-by-Step Verified Solution

Related Learning Resources & Exam Preparation