How many grams of potassium carbonate are needed to make 200 mL of a 2.5 M solution? Chemistry Solutions Molarity 1 Answer anor277 Mar 12, 2016 We need approx. #70# #g# of potassium carbonate. Explanation: #"Concentration"# #=# #"Moles of solute"/"Volume of solution (L)"# Thus, #"Moles of solute"# #=# #"Concentration "xx" Volume of solution"# #2.50*mol*L^-1xx0.200*L# #=# #0.500*mol# #0.500*cancel(mol)xx138.21*g*cancel(mol^-1)" potassium carbonate"# #=# #??g" potassium carbonate"# Answer link Related questions what is the molarity of 20.0 ml of a KCl solution that reacts completely with 30.0 ml of a 0.400... How can molarity and osmolarity be calculated from mass per unit volume? How can molarity be used as a conversion factor? How high can molarity be? How does molarity change with temperature? How do you find molarity of a solution? What is the molarity of 10 NaOH? What is the molarity of 3 hydrogen peroxide? What is the molarity of a solution that contains 3.2 mol of solute in 0.98 L of solution? What is molarity? See all questions in Molarity Impact of this question 67310 views around the world You can reuse this answer Creative Commons License