Answer to Question #135006 in General Chemistry for Jayden

Question

A 10g sample of water at boiling point (O^ C) is boiled completely. How much energy was added to the sample

Answer 1

According to the equation:

Q = m × H_v

where Q₂ - boiling energy, m - mass of the sample, H_v - heat of vaporization

As heat of vaporization of water equals 2.26 × 10⁶ J/kg:

Q = 10 g × 2.26 × 10⁶ J/kg = 10 g × 2.26 × 10³ J/g = 2.26 × 10⁴ J

Answer: 2.26 × 10⁴ J