What is the molar heat capacity of water?

CONCEPT:

Molar Heat Capacity

• Molar heat capacity is defined as the amount of heat required to raise the temperature of one mole of a substance by one Kelvin (or one degree Celsius).
• The molar heat capacity is expressed in units of Joules per mole per Kelvin (J/mol·K).
• For water (H₂O), the molar heat capacity is relatively high due to hydrogen bonding, which requires more energy to break and increase molecular motion.

EXPLANATION:

• The molar heat capacity of water is a well-known value: 75.3 J/mol·K.
• This value corresponds to Option 1.
• It is important to note that the specific heat capacity of water (per gram) is 4.184 J/g·K, which is different from the molar heat capacity.

Therefore, the molar heat capacity of water is 75.3 Joule per mol-Kelvin (Option 1).