Question R3 Q14 - NSB Regional 2016

Many salts dissolve to a greater extent in hot water than cold water. Which of the following best explains this fact?

W) Most salts dissolve endothermically

X) Most salts dissolve exothermically

Y) There are more collisions between salt ions and water molecules at a higher temperature

Z) The ion-dipole forces between water molecules and salt ions increase with temperature

Science Bowl Question