What is the osmolarity of a 500 mM NaCl solution in Osm What

What is the osmolarity of a 500 mM NaCl solution? (in Osm)

What is the osmolarity of a 200 mM glucose solution (in mOsm)

What is the Osmolarity of a 100 mM MgCl2 solution? (in mOsm)

Solution

Ques-1: What is the osmolarity of a 500 mM NaCl solution?

Osmolarity = 2 * Molarity of sodium chloride (NaCl)

Given molarity of NaCl ---> 500mM

1Molar solution of sodium chloride (NaCl) ---> 2 Osm (of osmolarity)

Osmolarity = 2 * 500 mM --> 1000mOsm or 1000 * 10^-3 = 1 Osm

Similarly ques-2:

What is the osmolarity of a 200 mM glucose solution (in mOsm)

1Molar glucose (nonionizing) ---> 1 Osmolar

200mMolar glucose ---> ?

200mOsm or 200 * 1000 --> 0.2Osm