Which of the following is a redox reaction? (a) NaCl+KNO3 ⟶NaNO3+KCl (b) CaC2 O4+2 HCl ⟶CaCl2^3+

step 1 Which of the following is a Redox reaction? There are four types of chemical reactions given and

Which of the following is a redox reaction? (a) NaCl+KNO3...

Which of the following is a redox reaction? (a) $\mathrm{NaCl}+\mathrm{KNO}_{3} \longrightarrow \mathrm{NaNO}_{3}+\mathrm{KCl}$ (b) $\mathrm{CaC}_{2} \mathrm{O}_{4}+2 \mathrm{HCl} \longrightarrow \mathrm{CaCl}_{2}^{3}+\mathrm{H}_{2} \mathrm{C}_{2} \mathrm{O}_{4}$ (c) $\mathrm{Mg}(\mathrm{OH})_{2}+2 \mathrm{NH}_{4} \mathrm{Cl} \longrightarrow \mathrm{MgCl}_{2}+2 \mathrm{NH}_{4} \mathrm{OH}$ (d) $\mathrm{Zn}+2 \mathrm{AgCN} \longrightarrow 2 \mathrm{Ag}+\mathrm{Zn}(\mathrm{CN})_{2}$

Which of the following is a redox reaction?
(a) $\mathrm{NaCl}+\mathrm{KNO}_{3} \longrightarrow \mathrm{NaNO}_{3}+\mathrm{KCl}$
(b) $\mathrm{CaC}_{2} \mathrm{O}_{4}+2 \mathrm{HCl} \longrightarrow \mathrm{CaCl}_{2}^{3}+\mathrm{H}_{2} \mathrm{C}_{2} \mathrm{O}_{4}$
(c) $\mathrm{Mg}(\mathrm{OH})_{2}+2 \mathrm{NH}_{4} \mathrm{Cl} \longrightarrow \mathrm{MgCl}_{2}+2 \mathrm{NH}_{4} \mathrm{OH}$
(d) $\mathrm{Zn}+2 \mathrm{AgCN} \longrightarrow 2 \mathrm{Ag}+\mathrm{Zn}(\mathrm{CN})_{2}$

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Key Concepts

Redox Reaction

A redox reaction is a type of chemical reaction in which electrons are transferred between two species. This process involves one substance undergoing oxidation (losing electrons) and another undergoing reduction (gaining electrons), thus changing the oxidation states of the elements involved.

Oxidation and Reduction

Oxidation is the process by which an atom or ion loses electrons, resulting in an increase in its oxidation state, while reduction is the gain of electrons, leading to a decrease in the oxidation state. These two processes occur simultaneously in redox reactions, and their balance is crucial for the reaction’s overall electron transfer.

Oxidation State

The oxidation state is a number assigned to an element in a compound that represents its degree of oxidation or reduction. By analyzing changes in oxidation states from reactants to products, one can determine whether a reaction is a redox reaction, since electron transfer will lead to changes in these states.

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