Question

What is a combination reaction.​

Answer 1

$\huge\star{\green{\underline{\mathfrak{Answer :-}}}}$

Combination reaction is a reaction in which two or more substances combine to form a new compound ( a single substance ).

Example :-

$\tt H_2 + O_2 \implies H_2 O$

$\tt Mg + O_2 \implies MgO$

$\tt 2 CO + O_2 \implies 2 CO2$

$\tt 2 SO_2 + O_2 \implies 2 SO_3$

$\tt CaO + H_2 O \implies Ca (OH)_2$

$\tt NH_3 + HCl \implies NH_4 Cl$

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Other reactions :-

• Decomposition
• Displacement
• Double-displacement
• Redox

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Answer 2

$\Huge{\tt{Combination \ Reactions \colon }}$

• Chemical reaction in which two or more substances (elements,ions,atoms or compounds ) interact with each other forming a more chemically complex compound

Combination Reactions are of three types :

• Reaction between two atoms :

$\tt{2{H}_{2} + {O}_{2} \longrightarrow 2{H}_{2}O}$

• Reaction between two compounds :

$\tt{CaO + C{O}_{2} \longrightarrow CaC{O}_{3}}$

• Reaction between a compund and an atom :

$\tt{{O}_{2} + CO \longrightarrow C{O}_{2}}$

• Combination Reactions are antagonistic to Decomposition reactions