Required practical 1 - making solution

Question 1

Step 1

Answer 1

Calculate required mass of substance to make a 200cm^3 solution of 0.1 moldm^3

Question 2

Step 2

Answer 2

Weigh a clean, dry weighing boat on an accurate balance (2dp)

Question 3

Step 3

Answer 3

Using a spatula, add the required mass of the substance to the weighing boat

Question 4

Step 4

Answer 4

Remove from the balance, set to zero and measure the mass of the balance and its contents together

Question 5

Step 5

Answer 5

Pour the contents of the weighing bottle into a clean, dry beaker and reweigh the weighing boat

Question 6

Step 6

Answer 6

Calculate the mass of the required substance that has been added to the beaker

Question 7

Step 7

Answer 7

Add approximately 100cm^3 of distilled water into the beaker and use a glass rod to stir until all of the solid has dissolved

Question 8

Step 8

Answer 8

Using a funnel, transfer the solution from the beaker into a 250cm^3 volumetric flask - using further distilled water, wash the beaker, the funnel and the glass rod and add this into the volumetric flask

Question 9

Step 9

Answer 9

Make the volumetric solution up to the graduated mark until the bottom of the meniscus is at 250cm^3

Question 10

Step 10

Answer 10

Stopper the flask and invert to ensure it has mixed thoroughly