Question

translate the following statement in to balance chemical equation (i) Nitrogen gas combine with Oxygen gas to form Nitrogen dioxide gas (ii) a pinch of solid sodium carbonate is added to dilute hydrochloric acid in Test tube sodium chloride and water formed remain in solution and carbon dioxide excape out(iii)hydrogen sulphide gas reacts with oxygen gas to form solid sulphur and liquid water

Answer 1

(i)    N2 + 2O2 ----------> 2NO2

(ii)   On adding a pinch of sodium carbonate is added into dilute hydrochloric acid in a test tube, strong effervescence is observed.

Reason:-

Evolution of carbon dioxide.

Reaction:-

Na2co3 + 2HCl  ->  2NaCl + H2O + CO2

(iii)    2H2S +O2-------->2S+2H2O

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