NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 1 of 1195
When 50 g of iron is dissolved in HCl at 25°C in an open vessel and atmospheric pressure is 1 atm, calculate the work done?
When iron is dissolves in HCl, hydrogen is produced
Fe + 2HCl → FeCl 2 + H 2
From the ideal gas equation PV = nRT
From the given data
n = weight/molecular weight
By substituting the values in above equation
This is equal to volume change when reaction is carried out in open beaker.
Work done by the system W=-P∆V