Chapter U4, Problem 2STP

Interpretation Introduction

Interpretation:

The information which best describe the written chemical equation needs to be identified.

Concept introduction:

A chemical equation is a symbolic depiction of a chemical reaction in the form of formulae and symbols, wherein the reactant units are given on the left side and the product units on the right side.

Answer to Problem 2STP

The option (C) is correct.

Explanation of Solution

A chemical equation represents having formulas and symbols. It is used to identify molar and relative molecular amounts of the product and reactant within the chemical reaction.

• A chemical equation would tell the symbols and formulas of the products and reactants.
• It can represent the physical phase of substance, whether it is liquid, solid or gas.
• It can show if there is any special condition which is required for the reaction to occur like, using a catalyst or adding heat.

For example:

${{\text{(NH}}_4\text{)}}_2{\text{Cr}}_2{\text{O}}_7\text{(s)}\to {\text{Cr}}_2{\text{O}}_3{\text{(s)+N}}_2{\text{(g)+4H}}_2\text{O(g)}$

So, as per the above explanation option (C) is correct.