Answer to Question #59182 in General Chemistry for cristian

Question

2. What is the molarity of a solution containing 23 g of NaCl in 500 mL of solution?

Answer 1

Molarity is number of moles of solute in unit volume for this solution. 1 mole of NaCl weight 58.5 g, so, we have 23/(58.5 )=0.393 moles in 500 mL. In 1 L is 0.393*2 =0.786 moles, so, molarity is 0.786 moles/L or 0.786 M.
Answer: molarity is 0.786 moles/L or 0.786 M.