Balance the following equations: 

(a) Cr(s) + O₂(g) n Cr₂O₃(s)
(b) Cu₂S(s) + O₂(g) n Cu(s) + SO₂(g)
(c) C₆H₅CH₃(ℓ)+ O₂(g) n H₂O(ℓ) + CO₂(g)

Data given in Example 3.1

Transcribed Image Text:

EXAMPLE 3.1 Balancing an Equation for a Combustion Reaction Problem Write the balanced equation for the combustion of ammonia gas (NH3) to give water vapor and nitrogen monoxide gas (NO). What Do You Know? You know the correct formulas and/or names for the reac- tants (NH3 and oxygen, O₂) and the products (H₂O and nitrogen monoxide, NO). You also know their states. Strategy First write the unbalanced equation. Next balance the N atoms, then the H atoms, and finally the O atoms.