A constant-volume gas thermometer is calibrated in dry ice(-80.0°C ) and in boil

Question

A constant-volume gas thermometer is calibrated in dry ice(-80.0°C ) and in boiling ethyl alcohol (78.0°C ). Therespective pressures are 0.900 atm and 1.635 atm. (Note that wehave the linear relationship P = A + BT,where A and B are constants.) (a) What value of absolute zero does thecalibration yield?
1°C
(b) What pressures would be found at the freezing and boilingpoints of water? freezing point 2 atm boiling point 3 atm (a) What value of absolute zero does thecalibration yield?
1°C
(b) What pressures would be found at the freezing and boilingpoints of water? freezing point 2 atm boiling point 3 atm freezing point 2 atm boiling point 3 atm

Explanation / Answer

The 1st thing to do is find the values of the constants A andB. To do this, use the data given to find the constants A andB using these two equations 0.9 = A -80B 1.635 = A + 78B Solve this system of equations for A and B (a) Set P = 0 and calculate T (b) Calculate freezing point pressure P = A + B(0) and boilingpoint pressure P = A + B(100)

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