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Questions
What is the difference between molality and molarity?
Differentiate between molarity and molality.
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Solution
| Sr. No. | Molarity | Molality |
| 1. | Molarity is the concentration of a material determined as the number of moles of solute dissolved in one litre of solution. | Molality is the concentration calculated as the number of moles of solute found in one kilogram of solvent. |
| 2. | Molarity is denoted by the symbol M. | Molality is denoted by the symbol m. |
| 3. | The molarity formula is moles per litre. | The molality formula is moles per kilogram. |
| 4. | Molarity is impacted by temperature changes. | Molality is not affected by temperature changes. |
| 5. | Changes in pressure affect molarity. | Pressure changes do not affect molality. |
| 6. | Molarity can lead to an imprecise and inaccurate concentration. | Molality can lead to an accurate and precise concentration measurement. |
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