The vapor pressure of methanol at 25°C is 126.mmHg. Calculate the vapor pressure in atm and torr. Round each of your answers to 3 significant digits.atmtorr
Question
The vapor pressure of methanol at 25°C is 126 mmHg.
Calculate the vapor pressure in:
- atm
- torr
Round each of your answers to 3 significant digits.
Solution
To convert the vapor pressure from mmHg to atm and torr, we need to use the conversion factors.
- Conversion from mmHg to atm: 1 atm = 760 mmHg
So, to convert 126 mmHg to atm, we divide 126 by 760.
126 mmHg / 760 = 0.1658 atm
Rounding to three significant figures gives 0.166 atm.
- Conversion from mmHg to torr: 1 mmHg = 1 torr
So, 126 mmHg is equal to 126 torr.
Therefore, the vapor pressure of methanol at 25°C is 0.166 atm and 126 torr.
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