Question

Nitration of 4-hydroxybenzaldehyde produces 4-hydroxy-3,5-dinitrobenzaldehyde. A) Calculate and therCircthe limiting reagent in the equation below 01N HSO H+2 HO o, 26.8 mL 21.75 ml. 27 g (actual yield) 2.294 g (d-1.226 g/mL) (13.80 M 63.012 MW 122.123 (mol) 212.117 18.020 B) Calculate the theoretical yield (with the correct sig. fig.) of the 4-hydroxy-3,5-dinitrobenzaldehyde in grams. C) Calculate the percent yield (with the correct sig. fig.) of the 4-hydroxy-3,5-dinitrobenzaldehyde.

Answer 1

Based on the stoichiometric ratio 2 equivalent of HNO3 is required for 1 equivalent of p-hydroxybenzaldehyde.

Nitration of 4-hydroxybenzaldehyde produces 4-hydroxy-3,5-dinitrobenzaldehyde. A) Calculate and therCirclothe limiting reagent in the equation below HSO H 2 H0 21.75 ml (d-1.226 p/mL) (13.80 M 63.012 26.8 mL 27 g (actual yield) 2.294 g MW 122.123 212.117 18020 wt 32.86 g. no of no of moles 0.269 HNO3 is the limiting moles -21.26* reagent 15.80/1 000 0.336 B) Calculate the theoretical yield (with the correct sig fig) of the 4-hydroxy-3,5-dinitrobenzaldehyde in grams. Theoretical yield 0.168 moles of the product - 0.168 212.17-35.63g C) Calculate the percent yield (with the correct .sig. fix.J of the 4-hydroxy-3,5-dinitrobenzaldehyde. Percentageyield: 10027/35.63-75.78%