1. What is Molar Ratio?

The molar ratio is the ratio of moles of one substance to the moles of another substance in a chemical reaction or mixture. It's a fundamental concept in stoichiometry and solution preparation.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• Moles of Substance 1 — The quantity of the first substance in moles
• Moles of Substance 2 — The quantity of the second substance in moles

Explanation: The ratio is unitless and represents how many moles of substance 1 exist per mole of substance 2.

3. Importance of Molar Ratio

Details: Molar ratios are crucial for:

• Balancing chemical equations
• Determining reaction stoichiometry
• Preparing solutions with specific component ratios
• Calculating theoretical yields in reactions

4. Using the Calculator

Tips:

• Enter both quantities in moles (mol)
• The denominator (substance 2) must be greater than zero
• For precise calculations, use at least 4 decimal places

5. Frequently Asked Questions (FAQ)

Q1: Can molar ratio be greater than 1?
A: Yes, if there are more moles of substance 1 than substance 2, the ratio will be greater than 1.

Q2: How is molar ratio different from mass ratio?
A: Molar ratio compares number of molecules/atoms, while mass ratio compares weights. They differ when components have different molecular weights.

Q3: What does a molar ratio of 2:1 mean?
A: It means there are 2 moles of substance 1 for every 1 mole of substance 2.

Q4: Can I use this for gases at STP?
A: Yes, you can convert gas volumes at STP (22.4 L/mol) to moles first, then calculate the ratio.

Q5: How precise should my molar ratio be?
A: Precision depends on your application. For most laboratory work, 4 significant figures is sufficient.