1. Which of the following elements is a transition metal?
2 answers:
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Answer :
(a) The concentration of after 1.00 hr will be 0.0037 M
(b) The concentration of after 1.00 day will be 0.00060 M
Explanation :
(a) The expression for first order reaction is:
where,
= concentration of
at time 't' = ?
= concentration of
at time '0' = 0.0040 M
k = rate constant = (assuming the power of 10 from the correct source)
t = time = 1.00 hr = 3600 s (1 hr = 3600 s)
Now put all the given values in the above expression, we get:
Thus, the concentration of after 1.00 hr will be 0.0037 M
(b) The expression for first order reaction is:
where,
= concentration of
at time 't' = ?
= concentration of
at time '0' = 0.0040 M
k = rate constant =
t = time = 1.00 day = 86400 s (1 day = 86400 s)
Now put all the given values in the above expression, we get:
Thus, the concentration of after 1.00 day will be 0.00060 M