Question

What mass of O is required for complete combustion of 1.5 moles of benzoic acid

Answer 1

Answer:

360 g of O is required for complete combustion of 1.5 moles of benzoic acid.

Explanation:

The reaction of benzoic acid with oxygen is,

$C_{6}H_{5}COOH + \frac{15}{2}O_{2}$ ---> $7CO_{2} +3H_{2}O$

so, for 1 mole benzoic acid we required= $\frac{15}{2} mol O_{2}$

and for 1.5 mole benzoic acid we required= $\frac{15}{2}*1.5 mol O_{2}$

                                                                  =11.25 mol$O_{2}$

Molar mass of 1 mole $O_{2}$ is 32 g/mol

mass of 11.25 mol$O_{2}$ is = 32 * 11.25 g

                                       =360 g