Question

An open ended mercury manometer is used to measure the pressure exerted by a trapped gas as shown below. Initially
there is no difference in mercury levels in both the arms As A dissociates upon sparking as follows
Ag) B(g) + 3C(8)
latm
GasA
Hg
if pressure of gas A decreases to 0.9 atm, then which of the following are true at that instance at 300 K​

Answer 1

Answer:

Sorry I also don't know the answer