Isotonic means at the same pressure. Since NaCl ionizes to two particles and glucose doesn't ionize, you must have twice as much glucose to do the same job; therefore, you will need 0.30M glucose.
0.30M is 0.30 mols/L solution and that is 0.30 mols is 180 x 0.3 = 54 g/L solution. That's the same as 5.4g/100 mL.
Which of the following solutions of glucose (C6H12O6) is isotonic with a 0.15 M NaCl solution?
Question 24 options:
0.15%(w/v)
0.55%(w/v)
1.5%(w/v)
5.4%(w/v)
1 answer