The condition at which the entropy of a pure solid will be zero is<span> when a substance is at absolute zero. Absolute zero is </span><span>the lowest temperature that is theoretically possible, at which the motion of particles which constitutes heat would be minimal. It is zero on the Kelvin scale, equivalent to −273.15°C.</span>
Phenolphthalein
In acid it is colourless and in water also colourless
The answer is C ( The evaporation rate of water increases at all temperatures causing an increase in volume.)
D ................................
