Which of the following are combination reacti | vedclass

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(B) combination reaction is a reaction in which two or more reactants combine to form a single product.$(i) 2 KClO_3 \xrightarrow{	ext{Heat}} 2 KCl +

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$(ii)$ and $(iii)$

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(B) combination reaction is a reaction in which two or more reactants combine to form a single product.$(i) 2 KClO_3 \xrightarrow{	ext{Heat}} 2 KCl + 3 O_2$: This is a decomposition reaction because a single reactant breaks down into simpler products.$(ii) MgO + H_2O \longrightarrow Mg(OH)_2$: This is a combination reaction because two reactants ($MgO$ and $H_2O$) combine to form a single product $(Mg(OH)_2)$.$(iii) 4 Al + 3 O_2 \longrightarrow 2 Al_2O_3$: This is a combination reaction because two reactants ($Al$ and $O_2$) combine to form a single product $(Al_2O_3)$.$(iv) Zn + FeSO_4 \longrightarrow ZnSO_4 + Fe$: This is a displacement reaction because $Zn$ displaces $Fe$ from its salt solution.Therefore, $(ii)$ and $(iii)$ are combination reactions.

Which of the following are combination reactions?
$(i) 2 KClO_3 \xrightarrow{\text{Heat}} 2 KCl + 3 O_2$
$(ii) MgO + H_2O \longrightarrow Mg(OH)_2$
$(iii) 4 Al + 3 O_2 \longrightarrow 2 Al_2O_3$
$(iv) Zn + FeSO_4 \longrightarrow ZnSO_4 + Fe$

Similar Questions

Which of the following are combination reactions?
$(i)$ $2 KClO_{3} \xrightarrow{\text{Heat}} 2 KCl + 3O_{2}$
$(ii)$ $MgO + H_{2}O \longrightarrow Mg(OH)_{2}$
$(iii)$ $4 Al + 3O_{2} \longrightarrow 2 Al_{2}O_{3}$
$(iv)$ $Zn + FeSO_{4} \longrightarrow ZnSO_{4} + Fe$

Write the chemical equation of the reaction with an example each in which the following changes have taken place:
$(i)$ Formation of a precipitate.

Why is the amount of gas collected in one of the test tubes in the image double the amount collected in the other? Name this gas.

When potassium iodide solution is added to a solution of lead $(II)$ nitrate in a test tube,a precipitate is formed.
$(i)$ Write a balanced chemical equation for this reaction.
$(ii)$ What type of reaction is this?

Identify the type of reactions in each of the following reactions:
$(i)$ $CaCO_{3} \xrightarrow{\text{Heat}} CaO + CO_{2}$
$(ii)$ $AgNO_{3}(aq) + NaCl(aq) \longrightarrow AgCl(s) \downarrow + NaNO_{3}(aq)$

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Which of the following are combination reactions?$(i) 2 KClO_3 \xrightarrow{\text{Heat}} 2 KCl + 3 O_2$$(ii) MgO + H_2O \longrightarrow Mg(OH)_2$$(iii) 4 Al + 3 O_2 \longrightarrow 2 Al_2O_3$$(iv) Zn + FeSO_4 \longrightarrow ZnSO_4 + Fe$