Write word equations for two chemical reactions with the help of materials given in the box.
[ Air, copper sulphate, iron, vinegar, iron oxide, carbon dioxide, iron sulphate, copper, lime water, water ]

Academic Chemistry NCERT Class 7

1. Iron + Air + Water → Iron oxide

2. Copper sulphate + Iron → Iron sulphate + Copper

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Updated on: 01-Feb-2023

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Which of the following reactions will not occur? Why not?(a) Zinc Sulphate + Copper âÅ¾Â Copper Sulphate + Zinc(b) Copper Sulphate + Iron âÅ¾Â Iron Sulphate + Copper
Can copper displace iron from iron sulphate solution? Give reasons.
We can show that iron is more reactive than copper :by preparing copper sulphate solution and dipping iron strip in itby dipping both the strips in water for some timeby preparing iron sulphate solution and dipping copper strip in itby heating both iron and copper strips
Can copper displace iron from iron sulphate solution? Give reason for your answer.
What change in the colour of iron nails and copper sulphate solution you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes.
What changes in the colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?
Write the balanced chemical equations for the following reactions:(a) Calcium hydroxide + Carbon dioxide ------> Calcium carbonate + Water(b) Aluminium + Copper chloride ------> Aluminium chloride + Copper
What happens when(a) Dilute sulphuric acid is poured on a copper plate?(b) Iron nails are placed in a copper sulphate solution?Write word equations of the reactions involved.
Write the balanced chemical equations for the following reactions :(a) Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water(b) Zinc + Silver nitrate → Zinc nitrate + Silver(c) Aluminium + Copper chloride → Aluminium chloride + Copper(d) Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride
Write equations for the reactions of(i) iron with steam.(ii) calcium and potassium with water.
What happens when iron nails are put into copper sulphate solution?
You are given a solution of iron sulphate. Which of the following do you think cannot displace iron from iron sulphate?magnesiumcalciumcopperzinc
Translate the following statements into chemical equations and then balance the equations:(a) Hydrogen sulphide gas burns in air to give water and sulphur dioxide.(b) Phosphorus burns in oxygen to give phosphorus pentoxide.(c) Carbon disulphide burns in air to give carbon dioxide and sulphur dioxide.(d) Aluminium metal replaces iron from ferric oxide, Fe2O3, giving aluminium oxide and iron.(e) Barium chloride reacts with zinc sulphate to give zinc chloride and barium sulphate.
Write two observations that you will make when an iron nail is kept in an aqueous solution of Copper Sulphate. Write the chemical equation for this reaction.
(a) What happens when sulphur dioxide is dissolved in water? Write a word equation for the reaction which takes place.(b) What happens when an iron nail is placed in copper sulphate solution? Write word equation of the reaction involved.

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