Metals and hydrochloric acid

Question 1

Magnesium and dilute hydrochloric acid

Answer 1

• very vigorous
• the mixture gets very hot
• a colourless solution of magnesium chloride is formed

Question 2

Aluminium and dilute hydrochloric acid

Answer 2

• slow to start reacting

- there is a strong layer of aluminium oxide that stops the acid getting to the metal

Question 3

Zinc and iron

Answer 3

• react slowly in the cold, but more rapidly on heating

- it is less vigorous than aluminium

Question 4

how to find the approximate position of a metal in the reactivity series (cold water)

Answer 4

add some to cold water

if there is any rapid reaction, it must be above magnesium in the reactivity series

Question 5

dilute hydrochloric acid

Answer 5

add some of the mmetal to some dilute hydrochloric
acid. I there ist any reaction in the cold, warm it up
If there is still no reaction, the metal is probably below hydrogen