reduction

Question 1

reduction of metal oxides by carbon

Answer 1

• the more reactive a metal is, the more stable its metallic oxide is, the harder it is to reduce the metal oxide to the metal by carbon
• carbon+metal oxide->metal+co2
• eg. carbon which is more reactive than copper reduces copper(II) oxide to copper

Question 2

reduction of metal oxides by hydrogen

Answer 2

• the more reactive a metal is, the more stable its metal oxide is, the harder it is to reduce the metal oxide to the metal by hydrogen
• metal oxide+hydrogen->metal+water(g)

Question 3

purpose of burning hydrogen gas at the end

Answer 3

-maintain a steady stream of hydrogen so air will not enter and draw the steam produced out of the setup

Question 4

heat on metal carbonates

Answer 4

-the more reactive a metal is, the more thermally stable its metal carbonate is, the harder it is for the carbonate to be decomposed by carbon