Mole ConceptHard
Question
A definite volume of ammonia gas is passed through a series of electric sparks by which the volume becomes 90 ml. On washing with dilute orthophosphoric acid, the volume is reduced to 84 ml. Which of the following statement(s) is/are correct regarding the original ammonia sample?
Options
A.Its original volume was 45 ml
B.Its original volume was 48 ml
C.12.5% of the original ammonia has decomposed
D.87.5% of the original ammonia has decomposed
Solution
Volume of undecomposed NH3 = 90 – 84 = 6 mL
2NH3 → N2 + 3H2
Hence, initial volume of NH3 = 42 + 6 = 48 mL
Create a free account to view solution
View Solution FreeMore Mole Concept Questions
Change in volume of the system does not alter the number of moles in which of the following equilibria ?...An unknown oxide of manganese is reacted with carbon to form manganese metal and CO2. Exactly 31.6 g of the oxide, MnxOy...A quantity of 10 g of a piece of marble was put into excess of dilute HCl acid. When the reaction was complete, 1120 cm3...Cortisone is a molecular substance containing 21 atoms of carbon per molecule. The mass percentage of carbon in cortison...One mole of mixture of N2, NO2 and N2O4 has a mean molar mass of 55.4 g. On heating to a temperature, at which all the N...