Are these isotonic hypertonic or hypotonic.

Question

1.5% w/v NaCl
5.0% w/v glucose
0.55%w/v NaCl
And why??

Answer 1

Isotonic, hypotonic, hypertonic when compared to what. Iassume you mean when compared with NORMAL saline which is 0.9% NaCl.

I would convert 0.9% NaCl to M and use pi = i*MRT to calculate the osmotic pressure.
Then convert all of the solution to M and pi. Compart with the normal for hyper, iso, or hypo.
Post your work if you get stuck.