# How to Make a Five Percent Solution With Salt

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A salt solution, also called a saline solution, is simply a mixture of salt and water. Salt is the solute (the dissolving substance), and water is the solvent (the substance that dissolves another to create a solution). To make a salt solution by weight percent (w/v), you apply the formula w/v = (mass of solute ÷ volume of solution) × 100. The density of water is 1 gram per milliliter (g/ml) which means 1 milliliter of water weighs 1 gram.

• Salt
• Scale
• Water
1. ## Determine Final Volume

2. Work out how much salt solution you need. For this example, say you need 200 ml of salt solution.

3. ## Work out Percentage

4. Work out 5 percent of 200, i.e., 0.05 × 200 = 10. To make a 10 percent salt solution, work out 10 percent of 200 and so on. You can also work this out by re-arranging the formula, but multiplying the final volume by the decimal form of the percentage is simpler.

5. ## Weigh Salt

6. Weigh 10 grams of salt. You can use any type of salt, including table salt.

7. ## Dissolve Salt

8. Pour the salt into a graduated cylinder or volumetric flask containing about 180 ml of water. Swirl the flask gently until all the salt dissolves.