Chemistry
Give a balanced equation for a direct combination reaction involving :
(a) Two elements — one of which is a neutral gas and the other a yellow non-metal
(b) Two elements – one of which is a neutral gas and the other a monovalent metal
(c) Two compounds – resulting in formation of a weak acid
Chemical Reaction
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Answer
(a) Direct Combination of two elements one of which is a neutral gas and the other a yellow non-metal:
S + O2 [g] ⟶ SO2
(b) Direct Combination of two elements one of which is a neutral gas and the other a monovalent metal
4Na + O2 [g] ⟶ 2Na2O
(c) Formation of a weak acid:
CO2 [g] + H2O ⟶ H2CO3
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