Concentrations+of+solutions

TEMINOLOGY

Concentration- a measurment of the amount of solute that is dissolved in a given quanitity of solvent

Dilute SOlution- a solution that contains a small amount of solute

COncentration solution- a solution containing a large amount of solute

Molarity- the concentration of solute in a solution expressed as the number of moles of soute dissoved in 1 kg of solveen t

1.

A) A saline solution contains .90 g NaCL in exactly 100 m/l of solution. What is the molarity of the solution?

Known: solution concentration= .90g NaCl/ 100 mL and Molar Mass NaCl= 58.5 g/mol

CALCULATE

in a solution of 100 mL., there is a concentration of .90 NaCl in one mol of NaCl there is 58.5 g NaCl then convert miliLiters to liters by multiplying my 1000

.90 g NaCl/100mL x 1 mol NaCl/ 58.5 NaCl x 1000 mL/1 L

= .15 mol/L

B) A solution has the volume of 2.0 L and contains 36.0 g of glucose. If the molar mass of glucose is 180 g/mol, what is the molarity of the solution.