Mole Concept

Easychemistry

0.50 mol of CaCO3 is heated strongly. How many liters of CO2 (at STP) are evolved? (CaCO3 → CaO + CO2)

Select the correct option:

11.2 L

22.4 L

33.6 L

44.8 L

🔒 Solution Hidden from View

Submit your answer to unlock the detailed step-by-step solution.

About This Question

Subject: chemistry
Chapter: some basic concepts in chemistry
Topic: mole concept
Difficulty: Easy
Year: 2025

Solution

Correct Answer:

11.2 L

Reaction Balance: $C a C O_{3} (s) Δ C a O (s) + C O_{2} (g)$ .
Stoichiometry: $1 m o l C a C O_{3}$ produces $1 m o l C O_{2}$ .
Calculate Moles $C O_{2}$ : $0.50 m o l C a C O_{3} \to 0.50 m o l C O_{2}$ .
Convert to Volume at STP:
- $V o l u m e = M o l es \times 22.4 L$
- $V o l u m e = 0.50 \times 22.4 = 11.2 L$ .

This easy difficulty chemistry question is from the chapter some basic concepts in chemistry, covering the topic of mole concept. It appeared in the 2025 exam.

Looking for more practice? Explore all chemistry questions or browse some basic concepts in chemistry questions on RankGuru.

Mole Concept

Select the correct option:

Solution

🔒 Solution Hidden from View

More mole concept Practice Questions

How many moles of carbon dioxide are produced when 44 g of carbon dioxide is taken at standard condi...

Calculate the number of molecules present in 9 g of water ((\text{H}_2\text{O})). ((N_A = 6.022 ...

A sample of an oxide of iron contains 7.0 g of iron and 3.0 g of oxygen. If the atomic masses of Fe ...

How many moles of oxygen atoms are present in 5.0 g of CaCO3? (Atomic masses: Ca=40, C=12, O=16)

The density of a gas at STP is 1.25 g L⁻¹. Its molar mass is approximately:

The mass percent of nitrogen in NH4 NO3 (Atomic masses: N=14, H=1, O=16) is:

About This Question

Solution