Make a drawing of the apparatus labelling the water trough, measuring cylinder, delivery tube, flask, and dropping funnel. This apparatus is used to collect gases in the lab.

This apparatus is used to collect gases in the lab like hydrogen and carbon dioxide, but not sulfur dioxide. Explain why. 

This apparatus is used to measure the rate of a reaction.

Suggest a suitable reagent to use as Y.

This apparatus is used to measure the rate of a reaction.

Which other piece of apparatus is needed?

This apparatus is used to measure the rate of a reaction.

Outline the procedure for this experiment.

This apparatus is used to measure the rate of a reaction.

You must be careful not to use too much of the reagent. Why?

A sample of potassium salt was contaminated with potassium chloride. The tests was carried out on the contaminated sample.

TEST: Dilute nitric acid is added to the solid. The mixture bubbles. The gas given off turns lime water milky. Name the gas given off.

A sample of potassium salt was contaminated with potassium chloride. The tests was carried out on the contaminated sample.

TEST: Dilute nitric acid is added to the solid. The mixture bubbles. The gas given off turns lime water milky. Which anion is present in the potassium salt? 

A sample of potassium salt was contaminated with potassium chloride. The tests were carried out on the contaminated sample.

TEST: An equal volume of barium nitrate solution is added to a solution of the solid. A precipitate forms. What colour will the precipitate be?