Question
Which of the following options does not show instantaneous rate of reaction at 40th second?
A.
$$\frac{{{V_5} - {V_2}}}{{50 - 30}}$$
B.
$$\frac{{{V_4} - {V_2}}}{{50 - 30}}$$
C.
$$\frac{{{V_3} - {V_2}}}{{40 - 30}}$$
D.
$$\frac{{{V_3} - {V_1}}}{{40 - 20}}$$
Answer :
$$\frac{{{V_4} - {V_2}}}{{50 - 30}}$$
Solution :
Instantaneous rate can be determined graphically by drawing a tangent on the curve.
Thus, volume change during 50 - 30 $$sec .$$ interval $$ = {V_5} - {V_2}$$
and not $${V_4} - {V_2}.$$ Hence, $$\frac{{{V_4} - {V_2}}}{{50 - 30}}$$ does not show instantaneous rate of reaction at 40th second.