A physician attending to a dehydrated patient ordered that the patient be given intravenous normal saline. The recipe for normal saline solution is to weigh 180 g of very pure NaCl into a container and add enough water to produce 20.0 L of solution . What is the molar concentration of NaCl?

Strategy

Because molarity is defined as moles of solute per liter of solution, convert the mass of solute to moles. The flow diagram follows:

Transcribed Image Text:

Mass of NaCI Molar mass of NaCl Moles of NaCl Volume (L) of solution Molarity of NaCl solution