Why is temperature converted from °C to K in molar-mass determination?
Answer and explanation
Correct answer: Because gas-law relations require absolute temperature
Osmotic-pressure calculations use the gas-law relation πV = nRT. The temperature in this equation must be an absolute temperature, measured from absolute zero, so it is expressed in kelvin. Celsius values cannot be inserted directly because the Celsius scale does not begin at absolute zero. The conversion is T(K) = t(°C) + 273.15.
Frequently asked questions
What is the correct answer to this question?
Because gas-law relations require absolute temperature
Why is this the correct answer?
Osmotic-pressure calculations use the gas-law relation πV = nRT. The temperature in this equation must be an absolute temperature, measured from absolute zero, so it is expressed in kelvin. Celsius values cannot be inserted directly because the Celsius scale does not begin at absolute zero. The conversion is T(K) = t(°C) + 273.15.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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