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sarahdakroub sarahdakroub
  • 10-01-2017
  • Chemistry
Answered

The vapor pressure of ethanol at 25°C is 7.828 kPa . Calculate the vapor pressure in atm .

Verified Answer :

amal0k amal0k
  • 10-01-2017

First you get 7.83 kPa = 7.83 10^4 Pa
Then convert it to atm by using the relation 1 Pa = 9.8692 10^-6 atm, this gives you
7.83 kPa = 7.83 10^4 9.8692 10^-6 atm
= 77.275836 10^-2 atm
= 0.77275836 atm
Now round to three significant digits,
= 0.773 atm

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