(P) Making a Standard Solution

Question 1

Step 1

Answer 1

Place a dry weighing boat on a 2dp scale (zero the scale first)

Question 2

Step 2

Answer 2

Record the mass of the boat, then add 1.4-1.6g of solid

Question 3

Step 3

Answer 3

Record the exact mass of the solid and work out the difference in mass

Question 4

Step 4

Answer 4

Transfer the solid to a beaker and add distilled water. Stir with a glass rod until dissolved

Question 5

Step 5

Answer 5

Transfer the solution to a volumetric flask (rinse the glass rod, beaker and weighing boat and add washings to flask)

Question 6

Step 6

Answer 6

Make up to the 250cm^3 mark with distilled water, place a bung in the top of the flask and invert to mix