Solved: Calculating an Average Rate of ReactionFrom the
Chapter , Problem 1PE(choose chapter or problem)
If the experiment in Figure 14.3 is run for \(60 s, 0.16 \mathrm{~mol}\) A remain. Which of the following statements is or are true?
(i) After \(60 s\) there are \(0.84 \mathrm{~mol} \mathrm{~B}\) in the flask.
(ii) The decrease in the number of moles of A from \(t_{1}=0 \mathrm{~s} \text { to } t_{2}=20 \mathrm{~s}\) is greater than that from \(t_{1}=40 \text { to } t_{2}=60 \mathrm{~s}\).
iii) The average rate for the reaction from \(t_{1}=40 \mathrm{~s} \text { to } t_{2}=60 \mathrm{~s} \text { is } 7.0 \times 10^{-3} \mathrm{M} / \mathrm{s}\)
(a) Only one of the statements is true.
(b) Statements (i) and (ii) are true.
(c) Statements (i) and (iii) are true.
(d) Statements (ii) and (iii) are true.
(e) All three statements are true.
Equation Transcription:
Text Transcription:
60 s, 0.16 mol
60 s
0.84 mol B
t1=0 s to t2=20 s
t1=40 to t2=60 s
t1=40 s to t2=60 s is 7.0 x 10-3 M/s
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