Question

Write complete balanced equations for the following reactions :
(a) Calcium (solid) + Water (liquid) —–> Calcium hydroxide (solution) + Hydrogen (gas)
(b) Sulphur dioxide (gas) + Oxygen (gas) —–> Sulphur trioxide (gas)

Lakhmir Singh Chemistry Class 10

Answer 1

a) ca+h20-->ca(OH)2+H2

Answer 2

Answer:

The balanced equations for the following reactions are

(a) $\mathrm{Ca}(\mathrm{s})+2 \mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \longrightarrow \mathrm{Ca}(\mathrm{OH})_{2}(\mathrm{aq})+\mathrm{H}(\mathrm{g})$

(b) $2 \mathrm{SO}_{2}(g)+\mathrm{O}_{2}(\mathrm{~g}) \longrightarrow 2 \mathrm{SO}_{3}(\mathrm{~g})$

Explanation:

• A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge are identical for both the reactants and the products. In different words, the mass and the charge are balanced on both sides of the reaction.

• Likewise Learned As: Balancing the equation, balancing the reaction, conservation of charge, and mass.

Hence,  The balanced equations for the following reactions are

(a) $\mathrm{Ca}(\mathrm{s})+2 \mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \longrightarrow \mathrm{Ca}(\mathrm{OH})_{2}(\mathrm{aq})+\mathrm{H}(\mathrm{g})$

(b) $2 \mathrm{SO}_{2}(g)+\mathrm{O}_{2}(\mathrm{~g}) \longrightarrow 2 \mathrm{SO}_{3}(\mathrm{~g})$

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