Sample Problems on Mole Ratios
Problem 1: Consider the reaction 2H2 + O2 → 2H2O. Calculate the mole ratio between hydrogen (H2) and oxygen (O2).
Solution:
The mole ratio of H2 and O2 is 2:1. For every two moles of H2 used, one mole of O2 is required.
Problem 2: Determine the mole ratio of nitrogen (N2) and hydrogen (H2) in the reaction: N2 + 3H2 → 2NH3.
Solution:
The mole ratio of N2 and H2 is 1:3. This means that for every mole of N2, 3 moles of H2 are required.
Problem 3: Determine the reaction: CH4 + 2O2 → CO2 + 2H2O. Calculate the mole ratio of CH4 to O2.
Solution:
The mole ratio of CH4 and O2 is 1:2. This means that for every mole of CH4 absorbed, two moles of O2 are needed.
Problem 4: Solve the equation 4NH3 + 5O2 = 4NO + 6H2O. Calculate the mole ratio between ammonia (NH3) and oxygen (O2).
Solution:
The mole ratio of NH3 to O2 is 4:5. This means that for every 4 moles of NH₃, 5 moles of O2 are required.
Mole Ratio
Mole ratios refer to the ratio of the number of moles of one substance to the number of moles of another substance in a chemical reaction. These ratios are determined by the coefficients in the balanced chemical equation for the reaction. Mole ratio calculation are part of mole concept. Mole Concept is a key concept in chemistry that enables scientists to count and quantify atoms and molecules. It is based on the concept of a mole, which is a unit used to express chemical quantities. Avogadro’s number, represented by one mole, is 6.022 × 1023 particles.
In this article, we are going to learn about mole ratios in detail and how to calculate them.
Table of Content
- What is Mole Concept?
- What are Mole Ratios in Chemistry?
- What is Stoichiometry?
- Sample Problems on Mole Ratios
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