Question

Water expand when it freezes. Determine amount of work, in joules, done when a system consisting of 1.0 L of liquid water freezes under a constant pressure of 1.0 atm and forms 1.1L of ice.

Answer 1

 W = – P∆V 

= – 1 × (1.1 – 1) 

= –0.1 atm

= –0.1 × 10⁵ × 10^–3J = –10J