Need some chem rank the following in order (fastest to slowest) of dissolving time in water: granulated sugar (regular table sugar), powdered sugar, and sugar cubes. explain, relating to the collision theory, why you expect them to fall in this order. (assume all sugar is sucrose and water temperature is the same for all samples).

Hello!

The substances, ordered according to their dissolving time in water, are the following

Sugar Cubes > Granulated Sugar > Powdered Sugar

The difference between these substances is the degree of order. According to collision theory, for a substance to be dissolved, successful collisions between solvent molecules and solute molecules need to happen. as molecules are more ordered, successful collisions are less likely to happen, because atoms are fixed into a crystalline structure.

When the molecule is less ordered, successful collisions are more likely to occur, as the atoms can be impacted from different sides and aren't fixed into a given position. 

As the degree of order increases, the dissolving time in water will be higher too, as more time would be required for successful collisions to happen. The most ordered substance is sugar cubes, followed by granulated sugar and powdered sugar, and that order is the same as the order for dissolving time. 

Have a nice day!

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