Chemistry - Mole Concept Question with Solution | TestHub

An aromatic compound contains $69.4\%$ carbon and $5.8\%$ hydrogen. A sample of 0.303 g of this compound was analyzed for nitrogen by kjeldahl's method. The ammonia evolved was absorbed in 50 ml of $0.05\mathrm{M}{\mathrm{H}}_2{\mathrm{SO}}_4$. The excess of the acid required 25 ml of 0.1 M NaOH for neutralization. Its molecular mass is 121 . Determine the molecular formula and express the answer in the form of $\frac{w+x-y-z}{2}$ if the molecular formula of the compound is ${\mathrm{C}}_{\mathrm{w}}{\mathrm{H}}_{\mathrm{x}}{\mathrm{N}}_{\mathrm{y}}{\mathrm{O}}_{\mathrm{z}}$.