Problem: Chorline exists mainly as two isotopes 35Cl and 37Cl,a) Which is more abundant?b) How do you know?c) Compute the percentage of chlorine that is the 37Cl isotope.

🤓 Based on our data, we think this question is relevant for Professor Enderle's class at UCD.

FREE Expert Solution

Isotopes represent atoms of an element that contain the same atomic number (same number of protons), but different mass numbers (different number of neutrons). 


a. 35Cl is more abundant


b. The average atomic mass of Cl is 35.45 amu. 

Since 35.45 amu is closer to the mass of 35Cl (35 amu) than 37Cl (37 amu), this means that 35Cl has a mass greater contribution to 35.45 as compared to 37Cl


We’re being asked to percent 37Cl. We can use the following equation:


Atomic Mass = mass×f.a.isotope 1+mass×f.a.isotope 2


where atomic mass = average atomic mass of the element and f.a. = fractional abundance of the isotope


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Problem Details

Chorline exists mainly as two isotopes 35Cl and 37Cl,

a) Which is more abundant?

b) How do you know?

c) Compute the percentage of chlorine that is the 37Cl isotope.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Isotopes concept. You can view video lessons to learn Isotopes. Or if you need more Isotopes practice, you can also practice Isotopes practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Enderle's class at UCD.