Question

Balanced chemical equation for the reaction: As2S3 + O2 → As4O6 + SO2.

A) 2 As2S3 + 9 O2 → 4 As4O6 + 6 SO2
B) 4 As2S3 + 7 O2 → 4 As4O6 + 3 SO2
C) 3 As2S3 + 8 O2 → 4 As4O6 + 4 SO2
D) 2 As2S3 + 5 O2 → 4 As4O6 + 2 SO2

Answer 1

Option (C), The balanced chemical equation for the reaction of arsenic trisulfide with oxygen to form arsenic oxide and sulfur dioxide is represented by: 3 As2S3 + 8 O2 → 4 As4O6 + 4 SO2.

Step-by-step explanation:

The question asks for the balanced chemical equation for the reaction between arsenic trisulfide (As2S3) and oxygen (O2) to form arsenic oxide (As4O6) and sulfur dioxide (SO2). To balance a chemical equation, one must ensure that there are equal numbers of each type of atom on each side of the equation.

Let's assess the given options:

• Option A: 2 As2S3 + 9 O2 → 4 As4O6 + 6 SO2 - This equation has 4 As, and 6 S atoms on both sides, but the number of O atoms are not balanced (18 on the reactant side while 24 on the product side).
• Option B: 4 As2S3 + 7 O2 → 4 As4O6 + 3 SO2 - This equation does not have the same number of S atoms on both sides (12 on the reactant side but 3 on the product side).
• Option C: 3 As2S3 + 8 O2 → 4 As4O6 + 4 SO2 - This equation is balanced with 6 As, and 6 S atoms on both sides, and the O atoms are also balanced (24 on both).
• Option D: 2 As2S3 + 5 O2 → 4 As4O6 + 2 SO2 - This equation has different numbers of S atoms on the reactant (6) and product sides (2).

The correct balanced chemical equation is represented by option C: 3 As2S3 + 8 O2 → 4 As4O6 + 4 SO2.