Answer to Question #71705 in General Chemistry for Whitney

Question

A) Calculate the osmolarity of a 0.75% (m/v) CaCl2 solution.
B) Is it safe to use this solution in an IV?
C) If the CaCl2 solution is safe to use in an IV, enter the concentration from part A into the answer module below. If it is not safe, calculate what concentration (m/v%) of the CaCl2 solution would be safe.

Answer 1

A) Each Ca2+ ion pairs with a negative ion 2Cl− to give 3 Osmol of particles.
CaCl2 = 0.75 g/100 mL x 1000 mL/1 L x 1mol/110.98 g x 3 Osmol/1mol = 0.2027 Osmol/ L
B) Yes, is safe.
C) 0.75% (m/v) CaCl2