Question

Complete the following chemical reaction and balanced the chemical equation :
(i) Mg + HCl
(ii) NaOH + Zn
(iii) HCl + Na2CO3

Answer 1

Answer:

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Answer 2

Answer:

Chemical equations:

(i) Mg + HCl → MgCl₂ + H₂

(ii) NaOH + Zn → Na₂ZnO₂ + H₂

(iii) HCl + Na₂CO₃ → NaCl + CO₂ + H₂O

Balanced Equations:

(i) Mg + 2HCl → MgCl₂ + H₂

(ii) 2NaOH + Zn → Na₂ZnO₂ + H₂

(iii) 2HCl + Na₂CO₃ → 2NaCl + CO₂ + H₂O

Steps involved in writing a chemical equation :

• Write the symbols of the formulae of the reactants on the left hand side, with a + sign between them.

• Write the symbols or the formulae of the products on the right hand side, with a + sign between them.

• Put the sign of an arrow in between the reactant side and the product side.

• Represent the reactants and products in their molecular forms (because their atomic forms are usually neither stable not capable of separate existence.)