standard solution steps.pdf
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In chemistry when the concentration of a solution is accurately known it is called a standard solution. Standard solutions are needed for carrying out chemical experiments in the laboratory. Furthermore, they are needed to get accurate results. Standard solutions are useful in several industries as well.
standard solution steps.pdf
- 1. For this specific solution, we need 14.625 grams of sodium chloride. It needs to be measured accurately from a chemical balance. Collect the solute (NaCl) into the watch glass Remove the lid of the volumetric flask connect the funnel Use the wash bottle to transfer the solute from the watch glass to the volumetric flask via the funnel Close the lid and mix the solution properly with around 2/3 of the volumetric flask filled Open the lid and fill the volumetric flask with water with the wash bottle When reaching the marked level, watch the mark at eye level and add water drop by drop from the wash bottle When the mark is reached close the lid and mix the solution again gently and with minimum contact with the bulb of the volumetric flask The final step is to label the standard solution. The label should contain the name of the solution, volume and concentration, and the date of preparation. 1. 2. 3. 4. 5. 6. 7. 8. 9. Preparing a standard solution (NaCl) Method www.scienceaplus.com