Question

why foes sugar dissolve very quickly is hot water comparing with cold water​

Answer 1

sugar dissolved is very hot water comparing with cold water

Answer 2

Image result for why does sugar dissolve very quickly is hot water comparing with cold water

The reason why sugar dissolves at a faster rate in hot water has to do with increased molecular motion. The added energy in the hot water causes water molecules to move faster and sucrose molecules to vibrate faster. This added movement tends to make the bonds between sucrose molecules easier to overcome.