Question

The reaction is an example of:
$Zn + 2HCl \to ZnC{l_2} + {H_2} \uparrow $
A. Combination reaction
B. Double displacement reaction
C. Displacement reaction
D. Decomposition reaction

Answer 1

Hint: We need to know that a salt metathesis reaction is a chemical process involving the exchange of bonds between two non-reacting chemical species, also called a double displacement reaction, a double displacement reaction, resulting in the formation of products with similar or identical bonding affiliations.
The method or result of simplifying a single chemical object into two or more fragments is chemical decomposition, or chemical breakdown. As the exact opposite of chemical synthesis, chemical decomposition is generally considered and described.

Complete step by step answer:
$Zn + 2HCl \to ZnC{l_2} + {H_2} \uparrow $
In displacement reactions, another reactive element is replaced by the element present in the solution. Zinc displaces hydrogen from hydrochloric acid in this situation. This is also an instance of a displacement reaction.
A chemical reaction in which a more reactive element displaces a less reactive element from its compound is a displacement reaction. In displacement reactions, both metals and nonmetals take part.
We need to know that a combination reaction is a reaction in which two or more elements or compounds (reactants) combine to form a single compound (also known as a synthesis reaction) (product). Equations of the following form are represented by such reactions: \[X{\text{ }} + {\text{ }}Y \to XY\].
Option A is not the correct answer because this reaction is not undergoing a combination reaction.
We have to remember that the double displacement reactions can be characterised as chemical reactions in which each of the two reacting molecules is exchanged for the product to form one part. The cations and anions of two different compounds exchange places during this reaction, forming two completely different compounds. Option B is not the correct answer because this reaction is not undergoing a double displacement reaction.
We have to know that a chemical reaction is a single-displacement reaction in which one element in a compound is substituted by another. Generically, it can be interpreted as \[A{\text{ }} + {\text{ }}B - C{\text{ }} \to {\text{ }}A - C{\text{ }} + {\text{ }}B\] this will more likely happen if A is more reactive than B, resulting in a more stable product. Option C is the correct answer because this reaction is undergoing a displacement reaction.
We also remember that a decomposition reaction is a reaction in which two or more simpler compounds break down into a compound. The general form of a reaction to decomposition is: \[AB \to A + B\]. Most reactions to decomposition involve energy input in the form of heat, light, or electricity. Option D is not the correct answer because this reaction is not undergoing a decomposition reaction.
Therefore, the correct answer to the question is option C.

Note:
We have to remember that a colourless inorganic chemical framework with the formula \[HCl\] is hydrochloric acid or muriatic acid. Hydrochloric acid has a pungent scent that is distinctive. It is known as highly acidic and can strike the skin over a wide variety of compositions, as hydrogen chloride dissociates entirely in an aqueous solution.
We need to know that the zinc is a vital mineral which is used in countless ways by your body. In fact, zinc is the second most common trace mineral in your body and is present in every cell after iron .More than 300 enzymes that help in metabolism, digestion, nerve function and many other processes need zinc for the action.