4.5 moles of calcium carbonate are reacted with dilute hydrochloric acid.

i. Write the equation for the reaction.

ii. What is the mass of 4.5 moles of calcium carbonate? (Relative molecular mass of
calcium carbonate formed is 100.)

iii. What is the volume of calcium dioxide liberated at STP?

iv. What mass of calcium chloride is formed? (Relative molecular mass of calcium
chloride is 111.)

v. How many moles of HCl are used in this reaction?

The diagram shows an apparatus for the laboratory preparation of hydrogen chloride.

i. Identify A and B.

ii. Write the equation for the reaction.

iii. How would you check whether the gas jar is filled with hydrogen chloride?

iv. What does the method of collection tell you about the density of hydrogen chloride?

Name the main constituent metal in the following alloys:

i. Duralumin