Describe how to prepare a 0.0100M Solution of oxalate using solid sodium oxalate and a 500mL volumetric flask and water.

the desired molarity is 0.01M. The idea is to take a xgrams of sodium oxalate into a 500mL v.flask and dissolve it in water to make 0.01M solution. The xgrams is what you have to calculate.

1. calculate the moles of sodium oxalate using n = Mv where M is the molarity and v is the volume 500mL in liters.

2. calculate the molar mass (Mr) of sodium oxalate.

we have a mole in step 1 and a molar mass in step 2. so we can find the mass using m =nMr where n is the mole, Mr is the molar mass.

To prepare a 0.0100M solution of oxalate using solid sodium oxalate and a 500mL volumetric flask, you will need to follow these steps:

1. Calculate the amount of sodium oxalate needed:

The molar mass of sodium oxalate (Na2C2O4) is 133.99 g/mol.

To prepare a 0.0100M solution, you'll need 0.0100 moles per liter of solution.

Therefore, the number of moles required can be calculated by multiplying the desired molarity by the volume in liters:

Moles = Molarity × Volume = 0.0100 mol/L × 0.5 L = 0.00500 mol

We now know that we need 0.00500 moles of sodium oxalate.

2. Determine the mass of sodium oxalate needed:

To find the mass, we'll use the equation:

Mass = Moles × Molar mass = 0.00500 mol × 133.99 g/mol = 0.67 g (rounded to two decimal places)

Therefore, you'll need 0.67 grams of solid sodium oxalate.

3. Weigh the required amount of solid sodium oxalate:

Using a balance, measure out 0.67 grams of solid sodium oxalate. Make sure to use proper lab safety precautions while handling chemicals.

4. Add the solid to the volumetric flask:

Carefully transfer the measured solid sodium oxalate into the dry 500mL volumetric flask. It could be helpful to use a funnel to avoid any spills.

5. Fill the volumetric flask with distilled water:

After adding the solid sodium oxalate to the flask, slowly add distilled water until the liquid level reaches the mark on the neck of the volumetric flask. To ensure accuracy, add the water drop-wise until the bottom of the meniscus reaches the mark.

6. Mix the solution:

Once the water is added, carefully seal the volumetric flask with a stopper or a cap and thoroughly mix the contents by inverting the flask several times. This will ensure that the solid sodium oxalate dissolves completely.

Congratulations! You have now prepared a 0.0100M solution of oxalate using solid sodium oxalate and a 500mL volumetric flask.