# Mercury & Alchohol Liquid Thermometer

How is the heat capacity of alcohol is higher than mercury while alcohol, used in thermometer, is more sensitive to heat than Mercury ?

• Why do you think alcohol is more sensitive to heat than mercury? – Chris Nov 17 '17 at 5:47
• I'm not sure why. This is why I'm asking if there's something I had missed or mistaken. – user175687 Nov 17 '17 at 6:05

But alcohol has a coefficient of thermal volume expansion about $5.5$ time that of mercury.
This means that if one were to take a mercury thermometer and replace the mercury with alcohol, a given temperature change would result in $5.5$ times as much motion of the fluid in the capillary. This is the increase in sensitivity.