Choose all of the processes from below which describe changes which are independ

Question

Choose all of the processes from below which describe changes which are independent of the path by which the change occurs.

a.) the elevation increase experienced by a traveller travelling from Grand Isle, LA to Denver, Colorado
b.) the work accomplished in burning a gallon of gasoline
c.) the distance travelled by a steer in a rodeo attempting to evade capture
d.) the time required to work a chemistry exam
e.) the passage of time experienced by a traveller between Grand Isle, Louisiana and Denver, Colorado
f.) the heat generated by a homogeneous gaseous chemical reaction carried out inside of a bomb calorimeter
g.) the energy evolved when a cube of sugar is oxidized to CO2(g) and H2O(g)

Explanation / Answer

a)

Here work= mgh it depends on path , h

b)

gasoline burns due to chemical reaction with O2 so independent of the path by which the change occurs.

c)

distance is travelled so it depends on path travelled

d)

Time requied to work a chemistry exam does not depend on any distance so independent of the path by which the change occurs.

e)

Here distance is moved by traveller .so it depends on path chosen by traveller

f)

chemical reaction is independent of path, it depends only on chemical reaction . independent of the path by which the change occurs.

g)Here too a chemical reaction occurs independent of the path by which the change occurs.

So processes b, d , f , g are independent of the path by which the change occurs.

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