15) Which of the following statements is not true when describing what happens to a cell with a concentration of 2.5% m/
Posted: Fri Jul 15, 2022 4:41 pm
15) Which of the following statements is not true when describing what happens to a cell with a concentration of 2.5% m/v NaCl is placed into a solution with a 0.9 % m/v NaCl.
A) The cell solution has the higher osmotic pressure.
B) Water flows into the cell from the surrounding solution.
C) The cell expands.
D) The surrounding solution has a higher osmotic pressure.
17) Which of the following substances, when added to a solution of acetic acid (CH3COOH), could be used to prepare a buffer solution?
A) NaOH
B) KNO2
C) CH3COONa
D) HNO3
18) Which of these solutions is the most basic?
A) [OH-] = 2 x 10-6 M
B) [OH-] = 3 x 10-4 M
C) [H3O+] = 4 x 10-10 M
D) [H3O+] = 6 x 10-9 M
A) The cell solution has the higher osmotic pressure.
B) Water flows into the cell from the surrounding solution.
C) The cell expands.
D) The surrounding solution has a higher osmotic pressure.
17) Which of the following substances, when added to a solution of acetic acid (CH3COOH), could be used to prepare a buffer solution?
A) NaOH
B) KNO2
C) CH3COONa
D) HNO3
18) Which of these solutions is the most basic?
A) [OH-] = 2 x 10-6 M
B) [OH-] = 3 x 10-4 M
C) [H3O+] = 4 x 10-10 M
D) [H3O+] = 6 x 10-9 M