Forums Assignment Help Can pressure be measured (approximately) by a mercury thermo

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  • #1498
    ahprofessional
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    Can pressure be measured (approximately) by a mercury thermometer?

    #10059
    juwanine
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    The boiling point of water decreases by 1 degC for per 27mm decrease of pressure (27mm decrease means 27mm of mercury). So, if water boils above 100 degC, atmosphere is above its normal value i.e. above 76 cm of mercury, if water boils at a temperature below 100 degC , the atmospheric pressure is below 76 cm of mercury.

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