SCIENCE
ENVIRONMENTAL SCIENCES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Pure
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Impure
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Unstable
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Stable
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Detailed explanation-1: -Ozone is thermodynamically unstable with respect to oxygen since its decomposition into oxygen results in the liberation of heat (H is negative) and an increase in entropy ( S is positive). These two effects reinforce each other, resulting in large negative Gibbs energy change ( G) for its conversion into oxygen.
Detailed explanation-2: -Ozone is thermodynamically unstable.
Detailed explanation-3: -But in case of ozone, there is one more oxygen atom. The third oxygen atom pushes one of its lone pairs of electrons toward one of the double bonded oxygen atoms. Thus, it interrupts the overall structural stability and thus, the molecule becomes unstable.
Detailed explanation-4: -Ozone is an odorless, colorless gas made up of three oxygen molecules (O3) and is a natural part of the environment. It occurs both in the Earth’s upper atmosphere, or stratosphere, and at ground level in the lower atmosphere, or troposphere.
Detailed explanation-5: -The atoms in O2 are stable – each atom “holds on” to the other. The atoms in O3 consist of a stable pair (O2) and a third, unstable atom. It is the unstable atom that gives ozone its power!