Imagine a beaker of pure water and another beaker containing water and some NaCl
ID: 1024662 • Letter: I
Question
Imagine a beaker of pure water and another beaker containing water and some NaCl are both kept at 80 degrees Celsius under 1 atm pressure. which of the following statements is correct if the atmospheric pressure is changed? a) as the atmospheric pressure is slowly increased, first the beaker containing water and salt will boil, then the beaker with pure water. b) as the atmospheric pressure is slowly decreased, first the beaker with pure water will boil, then the beaker with salt. c) as the atmospheric pressure is slowly decreased, first the beaker containing water and salt will boil, then the beaker with pure water. d) as the atmospheric pressure is slowly increased, first the beaker with pure water will boil, then the beaker with salt.
Explanation / Answer
the correct answer is D
Because water boil at 100^0c the boling point of salt water is high when compared to pure water.when atmospheric pressure increases boling point wii be lowered , hence pure water boils first and then salt water