Identify the combination reaction in the following
A
NH3+HCI→NH4Cl
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B
NaCl+KOH→NaOH+KCI
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C
2CO+O2→2CO2
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D
Cu(OH)2heat−−→CuO+H2O
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Solution
The correct options are ANH3+HCI→NH4Cl C2CO+O2→2CO2 Carbon mono oxide reacts with oxygen to combine it and form a single product CO2 hence the given reaction is an example of a combination reaction.
2CO+O2→2CO2
Similarly, the reaction of ammonia and hydrochloric acid to form ammonium chloride is also a combination reaction.