Question

State the type of chemical reactions and chemical equations that take place in the following: (i) Magnesium wire is burnt in air. (ii) Electric current is passed through water. (iii) Ammonia and hydrogen chloride gases ‘are mixed.

Answer 1

Answer:

i) when magnesium wire is burned in the air it results in forming magnesium oxide.

The chemical equation for this chemical reaction is this :-

2Mg(magnesium)+O2(oxygen)⇒2MgO(magnesium oxide)

The above reaction is a Synthesis Reaction

ii) when electric current is passed through water it breaks down into two elements hydrogen and oxygen.

The chemical equation for this chemical reaction is :-

2H2O(water)⇒2H2(hydrogen)+O2(oxygen)

The above reaction is a decomposition reaction

iii) when ammonia is mixed in hydrogen chloride it results in forming ammonium chloride.

The chemical equation for this chemical reaction is :-

NH3(ammonia)+HCl(hydrogen chloride)⇒NH4Cl(ammonium chloride)

The above reaction is a Combination reaction.

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Answer 2

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