A constant volume thermometer indicates a pressure of 1.500 × 10^ 4 Pa at the triple point of water, while at the normal boiling point it indicates 2.050 × 10^ 4 Pa . Determine the temperature at the normal boiling

Question

Quantrex Academy · Accepted Answer

Correct answer: B. 373.3 K

For a constant volume gas thermometer, the temperature

T

is given by the relation:

T = T_{tr} \times \dfrac{P}{P_{tr}}

where

T_{tr} = 273.16 \text{ K}

is the temperature at the triple point of water.

Given:

P_{tr} = 1.500 \times 10^4 \text{ Pa}

P = 2.050 \times 10^4 \text{ Pa}

Substituting the values:

T = 273.16 \times \dfrac{2.050 \times 10^4}{1.500 \times 10^4}

T = 273.16 \times \dfrac{205}{150}

T = 273.16 \times \dfrac{41}{30}

T = 373.318 \text{ K}

Rounding off to one decimal place, we get

373.3 \text{ K}

.

A constant volume thermometer indicates a pressure of 1.500 × 10^ 4...

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