What is the type of this reaction? 1 combination 2 decomposition 3 displacement 4 double Displacement 5 oxidation or reduction
Answers
Answer:1. Combination Reaction :
A chemical reaction in which two or more substances combine to form a single product is called a combination reaction or synthesis.
When iron and Sulphur are heated together, they combine to form a single product, iron sulphide.
2Fe(s) + S(s) → FeS (s)
Iron Sulphur Iron sulphide
2. Decomposition Reaction :
A chemical reaction in which a single compound splits into two or more simple substances is called a decomposition reaction.
When mercuric oxide is heated in a crucible, the orange-red powder begins to darken and a silver mirror begins to deposit on the cooler parts of the crucible. This is mercury. If we hold a glowing splint near the crucible, it can relight. This shows that the gas evolved during the reaction is oxygen.
2HgO(s) 2Hg(s) + O2 ↑
Mercuric oxide Mercury Oxygen
3.Displacement Reaction:
Reactions in which the more reactive element displaces the less reactive element from its compound are called displacement reactions.
Zinc displaces copper in copper sulphate to form zinc sulphate.
Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)
Zinc Copper sulphate Zinc sulphate
4.Double Displacement Reaction:
A type of chemical change in which two compounds in a solution react to form two new compounds by the mutual exchange of radicals. Usually, a solid is formed as a result of the reaction.
NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
Sodium Hydrochloric Sodium Water
hydroxide acid chloride
hold a glowing splint near the crucible, it can relight. This shows that the gas evolved during the reaction is oxygen.
2HgO(s) 2Hg(s) + O2 ↑
Mercuric oxide Mercury Oxygen
3.Displacement Reaction:
Reactions in which the more reactive element displaces the less reactive element from its compound are called displacement reactions.
Zinc displaces copper in copper sulphate to form zinc sulphate.
Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)
Zinc Copper sulphate Zinc sulphate
4.Double Displacement Reaction:
A type of chemical change in which two compounds in a solution react to form two new compounds by the mutual exchange of radicals. Usually, a solid is formed as a result of the reaction.
NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
Sodium Hydrochloric Sodium Water
hydroxide acid chloride