12) For the following equations, list out whether entropy...

12) For the following equations, list out whether entropy increases or decreases: A) A hot pie cooling at the windowsill giving out fumes: Increases B) the breaking of a large rock into very many smaller pieces of crushed gravel: Increases C) the thawing of ice cream which was left in the car: D) Spilling of pencils on the floor E) the absorption of odorous gaseous compounds by the charcoal filter in your home central air cleaning unit: Decreases

Transcript

0:00 Hi everyone.

00:01 So here in this question, we are given that for the following equations list out whether entropy increases or decreases.

00:09 So the first one we are given is a hot pipe cooling at the window shield.

00:15 A hot pipe which is cooling at the window sill.

00:25 So i have to say that in this case the entropy increases or decreases.

00:30 Okay.

00:31 So what happens in case? of a hot pipe cooling at a window seal is given out fumes right it will give out fumes giving out fumes right so entropy is increased in this case entropy is increased why because hot pie because hot pie plus window seals will give us pulled by plus fumes pulled by plus fumes now these fumes have a higher entropy okay these fumes are having higher entropy higher entropy okay therefore what we can say therefore overall randomness will increase right therefore overall randomness and as the overall randomness increases, entropy increases.

01:50 So in this case, entropy will increase.

01:53 Now let us see for the second one.

01:56 So in the second one, we have the breaking of a large rock into very smaller pieces.

02:02 So we are having a breaking of a large rock into smaller pieces.

02:12 Into smaller pieces, right? so we have to stated, this is, in this case, entropy increases or decreases.

02:23 So breaking of a large rock into many smaller pieces, here are also entropy will increase.

02:31 Here are also an entropy will increase.

02:34 Because a large rock is a single object, right? a large rock, it is a single object, object, which has lower entropy.

02:48 Only the large rock will be the single object that has lower entropy.

02:58 But when it is broken into smaller pieces, when it is broken to smaller pieces, what happens? entropy will increase, right? here again, entropy will increase, right? therefore, the number of objects increase, and hence the randomness increases, and hence the entropy increases.

03:18 Third one, we have that throwing of ice cream which was left in the car.

03:26 So we have throwing of ice cream left in turn...

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