Question

A 2 lite flask containing nh3 at 2 atm is connected to a 3 lit flask containing hcl at 3 atm through a narrow tube. What is the final total pressure if t is const.?

Answer 1

PV = nRT

n(NH3) = (2×2)/RT = 4/RT

Similarly,

n(HCl) = 9/RT

Total moles = 13/RT

P×(total volume) = 13/RT ×RT

P = 13/5 (ans.)