Question

A flask is charged with 0.150 mol of A and allowed to react to formB according to the following hypothetical gas-phase reaction.
A(g) B(g)
The following data are collected.
times (s) 0 40 80 120 160
moles of A 0.150 0.063 0.050 0.026 0.015


(a) Calculate the number of moles of B at each time in thetable.

0 s
_____ mol

40 s
_____ mol

80 s
______ mol

120 s
______ mol

160 s
_______ mol



(b) Calculate the average rate of disappearance of A for each 40 sinterval, in units of mol/s.

0 - 40 s
____ mol/s

40 - 80 s
____ mol/s

80 - 120 s
_____ mol/s

120 - 160 mol/s
_____ mol/s