Question

A flask is charged with 0.120 mol of A and allowed to react to form B...

A flask is charged with 0.120 mol of A and allowed to react to form B according to the following hypothetical gas-phase reaction.

A(g) rtarrow.gif B(g)

The following data are collected.

times (s) 0 40 80 120 160
moles of A 0.120 0.062 0.041 0.033 0.019


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

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 s interval, 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

0 0
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Answer #1

Saluhoh (a) Calculate the number of mal» f n he takl hime at each ine mole of B Os ০-1२० Hos o 1R0-0062= o-oS8 8os O-Ro-o41 o(uatand at t-uadat at t) Arerags ake af dhisappnnc of A at (40-os -1 0-041)0062) 80-40 Oo21 4О O o00525 S-25KISal/s Aw- Avcrarak &f disaearna caud at t-cutd averas o A ad (120-160 AL-A (0-a19)-Co.033) 12o-o 0.이니 чо 3-5 XImels Aw Avenage nate af disap

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