Chemistry & Chemical Reactivity
Solutions
Chemistry & Chemical Reactivity
A piece of charred bone found in the ruins of a Native American village has a 14C/12C ratio that is 72% of the ratio found in living organisms. Calculate the age of the bone fragment (t1/2 for 14C is 5.73 x 103 years.)
Interpretation:
The age of the bone fragment has to be calculated.
Concept Introduction:
Radiocarbon dating: The dynamic equilibrium exists in all living organism by exhaling or inhaling, maintain the same ratio of
Half-life period: The time required to reduce to half of its initial value, given by,
According to first order reaction;
Given,
According to first order reaction;
The decay constant is calculated as follows,
Substituting the values in above equation,
Chapter 25 Solutions
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