a) \(C_xH_yCOOH\) + \(\left(x+\frac{y}{4}+\frac{1}{4}\right)O_2\rightarrow\left(x+1\right)CO_2+\left(\frac{y}{2}+\frac{1}{2}\right)H_2O\)
b) \(C_xH_y\left(COOH\right)_2+\left(x+\frac{y}{4}+\frac{1}{2}\right)O_2\rightarrow\left(x+1\right)CO_2+\left(\frac{y}{2}+1\right)H_2O\)