Describe how you will prepare 500cm of 1M nacl
To prepare 500 cm³ of a 1M NaCl solution, you will need to follow a step-by-step process. Here's how you can do it:
Step 1: Determine the formula weight of NaCl
The formula weight of NaCl is 58.44 grams per mole. This means that one mole of NaCl weighs 58.44 grams.
Step 2: Calculate the amount of NaCl needed
Since we want to prepare a 1M NaCl solution, we need 1 mole of NaCl per liter of solution. As 500 cm³ is equal to 0.5 liters, we need 0.5 moles of NaCl.
To calculate the amount of NaCl needed in grams, multiply the number of moles by the formula weight:
0.5 moles x 58.44 grams/mole = 29.22 grams of NaCl.
So you will need 29.22 grams of NaCl to prepare 500 cm³ of a 1M solution.
Step 3: Measure and dissolve NaCl
Using an electronic balance or a weighing scale, carefully measure out 29.22 grams of NaCl. Add it to a clean and dry container.
Next, add distilled water gradually to the container, while continuously stirring to ensure complete dissolution of the NaCl. Keep adding water until the volume of the solution reaches 500 cm³.
Step 4: Mix and verify concentration
Once the NaCl is fully dissolved and the volume is at 500 cm³, mix the solution thoroughly. You can use a magnetic stirrer or gently swirl the container.
To verify the concentration, you can use a laboratory-grade pH meter or a hydrometer specifically calibrated for measuring the concentration of NaCl solutions. Ensure that the solution has a concentration of 1M.
Note: Always wear appropriate personal protective equipment (PPE), such as gloves and safety glasses, when handling chemicals. Additionally, make sure you are working in a well-ventilated area and follow any applicable safety guidelines and regulations.