Question

1. c₂h₂ + o₂ → co₂ + h₂o

Explanation:

Step1: Balance carbon atoms

Let the coefficient of \(C_{2}H_{2}\) be \(a\), \(O_{2}\) be \(b\), \(CO_{2}\) be \(c\) and \(H_{2}O\) be \(d\). For carbon atoms: \(2a = c\).

Step2: Balance hydrogen atoms

For hydrogen atoms: \(2a=2d\), so \(a = d\).

Step3: Balance oxygen atoms

For oxygen atoms: \(2b = 2c + d\). Substitute \(c = 2a\) and \(d=a\) into \(2b=2c + d\), we get \(2b=4a+a=5a\). Let \(a = 2\), then \(c = 4\), \(d = 2\), and \(b = 5\).

Answer:

\(2C_{2}H_{2}+5O_{2}
ightarrow4CO_{2}+2H_{2}O\)