Astudent observed that a small amount of acetone sprayed on the back of the hand felt very cool compared to a similar amount of water. your explanation of this phenomena should be that
a.) all organic compounds do this
b.) acetone has a lower viscosity and transfers heat quanta better
c.) water has a higher heat capacity than acetone therefore retaining more heat
d.) the higher vapor pressure of acetone results in more rapid evaporation and heat loss

D.) The higher vapor pressure of acetone results in more rapid evaporation and heat loss

Explanation:

Acetone being liquid with very low boiling point and hence can be easily be converted to gaseous state .

And ,

Therefore have higher vapour pressure and as liquid gets converted to gas , the process of evaporation takes place and leads to loss of heat .

Hence , from the given options , the most appropriate option according to given statement of the question is ( d ) .

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explanation:

the ratio of the conjugate base to the acid required to attain the desired ph.