Titrations

Question 1

To prepare a standard solution X to standardised solution of Y

Answer 1

X ammonium iron sulphate

Y potassium permanganate

Question 2

Weigh out Xg of ammonium iron sulphate crystals

Answer 2

9.8 g

Question 3

Dissolve crystals by

Answer 3

Adding 20 ml dilute sulfric acid

And then de-ionised water

Question 4

After iron crystals dissolved

Answer 4

Transfer contents to volumetric flask make up to graduation mark

Question 5

Addition of sulphuric acid?

Answer 5

Is vital to prevent the FE2+ ions with reacting with oxygen in water