How do you write a chemical formula for the following scenario: Nitric acid is a component of acid rain that forms when gaseous nitrogen dioxide pollutant reacts with gaseous oxygen and liquid water to form aqueous nitric acid?

1 Answer
Jun 16, 2016

Answer:

#"4NO"_2("g")+"O"_2("g")+"2H"_2"O("l")##rarr##"4HNO"_3("aq")#

Explanation:

This is a synthesis reaction, also called a combination reaction, because two or more reactants produce a single product. You essentially have been given a word equation, which does not give the chemical formulas of each substance. In order to write a chemical equation, you need to determine the chemical formulas of each substance. Then write the equation and balance it.

Reactants
Gaseous nitrogen dioxide: #"NO"_2("g")#
Gaseous oxygen: #"O"_2("g")#
Liquid water: #"H"_2"O"(l)"#

Product
Aqueous nitric acid: #"HNO"_3("aq")#

Balanced Equation

#"4NO"_2("g")+"O"_2("g")+"2H"_2"O("l")##rarr##"4HNO"_3("aq")#