Dont forget to the units and show work Practice problems on

Practice problems on molarity Due beginning of class on Friday, September 18 To do these problems yrow will need a Pe Table Round atomic we ghts For CL nearest 0.5 Don\'t forget the anits! How would you make one liter of l M NaCl solution? 2 How would you make 100 ml of a 1 M NaCl solution? 3 How would you make 10 L of a 0.5 M NaCl solution? 4 How would you make 200 ml of a 3 M NaCl solution? 5. To protect your cells you need to suspend them in a solution of 5 M sucrose (c12 Hou) that also contains 0.1 lf want to make 1 how would you do it? 6. You dissolve 42.5 g of lithium chloride (Lici) in enough water to make 2 liters. What is the concentration (in M? 7. You need to make a lot of 2 M calcium chloride (Caci2 solution. When you go to your stockroom, however, you find you only have 222gleft in the bottle. You decide to use it all and make as much solution as you can while you wait for your order for more Cac12 to come in. What volume of water do you add? 8. If there is a 2 M solution of LiCl and you take 50 ml of it, how many moles of LiCl did you take? How many grams of Lici did you take? 9 If there is a 1 M solution of HCI and you take 0,5 ml of it, how many moles (or millimoles) of HCI are in that 0.5 ml?

Solution

Answer 1: Molar solution is defined as the number of moles of a solute dissolved per liter of a solution. For 1 molar solution we have to dissolve 1 mole of solute per liter of solution. To make 1 molar solution of NaCl, we have to weigh 58.44 gram of NaCl and dissolve in few ml of water and then make final volume to 1 liter.