Question

The average concentration of Na+ ion in human body is 3 to 3.9 . The molarity of Na+ ion is about

Answer 1

Answer:

The answer is 0.17 M

Explanation:

Let's suppose the average concentration is 3.9 g per liter.

Now, for 1 L solution, mass of solute (Na+ion)= 3.9 g

So, no. of moles of ​Na+ion = given mass/ molar mass = 3.9/23 =0.169 g

Hence, molarity = moles/Volume in L= 0.169/1= 0.169 M  = 0.17 M

Thus the molarity of sodium ions in the human body is about 0.17 M .