Chemistry S.3.5

Question 1

A solution has a concentration of 0.05kg/L of glucose. What is its concentration in ppm?

Question 2

Which of the following statements is true?

A . In a solution, solutes constitute a greater proportion
B. The solubility of solid solutes increases with increase in temperature.
C. Vitamins with hydrophobic structures are water soluble.
D. The solubility of gas increases with increase in temperature

Question 3

Which of the following describes the process of diffusion?
A. It is the movement of substances from a solid to liquid state
B. It is the movement of a substance from areas of high concentration to low concentration.
C. It requires a large amount of energy.
D. It is specific to the movement of water only.

Question 4

Concentrations of sodium dissolved in water are higher inside the cell than outside. Which of the following best predicts which way the water will flow?
A. Water will remain in equal concentrations on both sides of the cell membrane.
B. Water will move from its low concentration (outside the cell) to the higher concentration (inside the cell).
C. Water will move from its high concentration (outside the cell) to the lower concentration (inside the cell).
D. Water will increase in concentration inside and outside the cell.

Question 5

In two or three sentences, explain why water has high specific heat and high heat of vaporization.