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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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kdol kdol
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9 years ago
A 289-mL sample of CO gas is collected over water at 31°C and 758 mmHg. If the temperature of the gas collection apparatus rises to 39°C, what is the new volume of the sample? Assume that the barometric pressure does not change. The vapor pressure of water at 30°C is 31.8 mmHg and at 40°C is 55.3 mmHg.
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8 years ago
Similar Question
A 273-mL sample of CO gas is collected over water at 31°C and 755 mmHg. If the temperature of the gas collection apparatus rises to 39°C, what is the new volume of the sample? Assume that the barometric pressure does not change. The vapor pressure of water at 30°C is 31.8 mmHg and at 40°C is 55.3 mmHg.

Answer:

Using the formula,

V1/T1 = V2/T2

where,

V1 = 273 ml

V2 = unknown final volume at 39 oC

T1 = 31 oC

T2 = 39 oC

Feed values,

273/31 = V2/39

V2 = 343.45 ml
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