50 mL of dry ammonia gas was sparked for a long time in an eudiometer tube over mercury
CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance
Problem
50 mL of dry ammonia gas was sparked for a long time in an eudiometer tube over mercury. After sparking, the volume becomes 97 mL. After washing the gas with water and drying, the volume becomes 49 mL. This was mixed with 60.5 mL of oxygen and the mixture was burnt. After the completion of the combustion of H2 , the volume of the residual gas was 48.75 mL. Derive molecular formula of ammonia.