pellets of calcium chloride are spread on a sidewalk covered in water that is 36°c. under which circumstance…

pellets of calcium chloride are spread on a sidewalk covered in water that is 36°c. under which circumstance will the calcium chloride dissolve faster?\nsand is sprinkled on the sidewalk.\nthe water cools to a temperature of 33°c.\npeople walking on the sidewalk crush the calcium chloride pellets.\nthe air pressure increases as the weather changes.

pellets of calcium chloride are spread on a sidewalk covered in water that is 36°c. under which circumstance will the calcium chloride dissolve faster?\nsand is sprinkled on the sidewalk.\nthe water cools to a temperature of 33°c.\npeople walking on the sidewalk crush the calcium chloride pellets.\nthe air pressure increases as the weather changes.

Answer

Brief Explanations:

Increasing the surface - area of a solute increases the rate of dissolution. Crushing the calcium chloride pellets increases their surface - area, allowing more of the solid to come in contact with the water and dissolve faster. Sand sprinkling has no direct effect on dissolution rate. Lowering water temperature decreases the kinetic energy of the system and slows down dissolution. Changing air pressure has little to no effect on the dissolution of calcium chloride in water.

Answer:

People walking on the sidewalk crush the calcium chloride pellets.