Question

(a) Why are decomposition reactions called the opposite of combination reactions? Explain with equations of these reactions.
(b) Express the following facts in the form of a balanced chemical equation
When a strip of copper metal is placed in a solution of silver nitrate, metallic silver is precipitated and a solution containing copper nitrate is formed"."

Answer 1

Answer:

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Answer 2

(a) Decomposition and combination reaction:

• The decomposition reaction involves single reactant which decomposes to form two or more products.
• $\bold{2 H_{2} O_{2} \rightarrow 2 H_{2} O+O_{2}}$
• In the above reaction, the hydrogen peroxide is decomposed into water and hydrogen.
• The combination reaction involves combination of more than one reactants to form a single product.
• $\bold{2 M g+O_{2} \rightarrow 2 M g O}$
• In the above reaction, the magnesium reacts with oxygen to form magnesium oxide.

(b) Chemical reaction:

• $\bold{C u+2 A g N O_{3} \rightarrow 2 A g \downarrow+C u\left(N O_{3}\right)_{2}}$
• In the above reaction, copper replaces the silver in the nitrate to form copper nitrate.
• Copper metal is much reactive than silver metal.

You can get all the answers of Chapter 1 in the link below:

https://brainly.in/question/13848082

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