Question

Eggs can be made to boil faster in salt water than in pure water. Explain.

Answer 1

• The boiling point of water is less than that of boiled water.
• Even though salt water has a higher boiling point, eggs can be made to boil faster in it.
• It is because salt water has a lower heat capacity compared to pure water.
• The heat capacity is the amount of energy needed to raise the temperature of water by 1°C.
• The heat capacity of pure water is very high.
• So, eggs can be made to boil faster in salt water than in pure water.