Regents Chemistry Exam August 2022
43. Which statement describes ice and liquid water in a stoppered flask at 0°C at equilibrium? (1) The rate of melting must equal the rate of freezing. (2) The rate of freezing must be greater than the rate of melting. (3) The mass of the ice must equal the mass of the liquid water. (4) The mass of the ice must be greater than the mass of the liquid water.
Explanation: At equilibrium the rates of forward and reverse reactions are equal. Ice can turn into liquid in a process called melting and back from liquid water into ice in a process called melting.