A solvent is a substance, typically a liquid, that dissolves a solute to form a solution. The solvent is usually present in greater amount compared to the solute.
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Water is known as the 'universal solvent' because it can dissolve many substances.
In an aqueous solution, water acts as the solvent.
The ability of a solvent to dissolve a solute depends on factors like temperature and polarity.
Solvents can be organic (e.g., ethanol) or inorganic (e.g., water).
Molarity (M) is calculated using the formula: $M = \frac{moles\ of\ solute}{liters\ of\ solution}$ where the volume includes both solvent and solute.