Question

Identify the type of chemical reaction:
\[2Na\left( s \right)\to S\left( s \right)\to N{{a}_{2}}S\left( s \right)\]
A. Combination reaction
B. Neutralization reaction
C. Synthesis reaction
D. Precipitation reaction

Answer 1

Hint: Chemical reaction, a process wherein at least one substance, the reactants, are changed over to at least one different substance, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent molecules of the reactants to create various substances as products.

Complete step by step solution: A chemical reaction is an overall classification of chemical reactions. It might be characterized as a chemical reaction wherein at least two substances join to form a single substance under suitable conditions.
A reaction wherein at least two reactants combine to form a single product is known as a combination reaction.
It appears as \[X+Y\to XY\]
Combination reaction is otherwise called a synthesis reaction. Because in this reaction new substances are synthesized.
Sodium \[\left( Na \right)\] combines with sulphur \[\left( S \right)\] to form sodium sulphide \[\left( N{{a}_{2}}S \right)\]. Hence it is a combination reaction and synthesizing a new product.
\[2Na\left( s \right)\to S\left( s \right)\to N{{a}_{2}}S\left( s \right)\]
Sodium reacts with sulfur to produce sodium sulfide. This reaction takes place at a temperature of over \[{{130}^{\circ }}C\]. It is prepared by absorption of hydrogen sulfide in sodium hydroxide. It is shipped as a \[40%\] solution with a specific gravity of 1.303 and a pH of 10.4.

Hence the correct option is A.

Note: Combination reactions include the development of new bonds and this process releases a great amount of energy as heat. Sodium sulfide (anhydrous) is a sulfide salt with formula Na2S. The pentahydrate and (especially) the nonahydrate are likewise known. In gel structure, sodium sulfide is utilized to mollify toenails to help with managing (thus remember torment) of ingrowing toenails