Question

The heating curve below shows temperature vs. heat added for ice, water and steam at 1 atm ______.

Options

• The first sloping line from sub-zero temperature to 0°C

• The first horizontal line at 0°C

• The second sloping line from 0°C to 100°C

• The second horizontal line at 100°C

Answer 1

The heating curve below shows temperature vs. heat added for ice, water and steam at 1 atm, the second sloping line from 0°C to 100°C.

Explanation:

Between 0°C and 100°C, water remains in the liquid state, and the temperature rises with added heat, so this sloping region corresponds to sensible heating of liquid water.