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(a)List the factors on which the rate of...

(a)List the factors on which the rate of chemical reaction depends.
(b) The half-life for decay or radioactive `""^(14)C` is 5730 years. An archaeological artefact containin wood has only `80%` of the `""^(14)C` activity as found in living trees. Calculate the age of artefect.

Text Solution

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`t_(1//2)=(0.693)/(k) rArr (0.693)/(5730)(yr)^(-1)=k`
`t=(2.303)/(k) log""(R_(0))/(R )`
`t=(2.303)/((0.693)/(5730))log""(100)/(80) =(2.303xx5730)/(0.693)xx0.0969` year
=1845 years.
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