Question

sugar will take less time to dissolve in:
○ ice cold lemonade
○ iced tea
○ hot cup of coffee
question 20
1 pts
what happens to the rate of diffusion when the concentration of a substance is doubled on one side of a semipermeable membrane such as increasing nacl concentration from 9mm to 18mm ?
○ rate increases
○ rate decreases
○ no change

Explanation:

First Question (Sugar Dissolution):

The rate of dissolution of a solute (sugar) increases with temperature. Hot coffee has a higher temperature than ice - cold lemonade and iced tea. Higher temperature provides more kinetic energy to the solvent molecules, which helps in breaking down the solute particles (sugar) faster. So sugar will dissolve faster in hot coffee.

Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration. The rate of diffusion is proportional to the concentration gradient (the difference in concentration between two regions). When the concentration of a substance (like NaCl) on one side of a semi - permeable membrane is doubled, the concentration gradient increases. An increased concentration gradient leads to a higher rate of diffusion as there is a greater "driving force" for the particles to move from the region of higher concentration to the region of lower concentration.

Answer:

hot cup of coffee

Second Question (Diffusion Rate):