You need to prepare 250. mL of a 0.150 M aqueous solution of sucrose, CzHzzOn(aq

Question

You need to prepare 250. mL of a 0.150 M aqueous solution of sucrose, CzHzzOn(aq), which is used frequently in biological experiments Which type of glassware should you O A use to make this solution (assuming O B that the accuracy of the concentration is important)? 250 mL O c 200 150 100 150 250 ml How should the correct amount of solute be obtained? O Measure out x cm of sucrose with a ruler. O Measure out x mol of solid sucrose on a molemeter O Measure out x g of solid sucrose on a balance. Now that you have selected the correct unit above, what is the value of x? Number How should the solute and solvent be mixed in the container? O Fill the continer with water to the 250-mL mark, then add the solute. O Mix a small amount of water with the solute to dissolve it, then fill with water to the 250-mL mark. O Add the solute, then fillthe container to the 250-mL mark with water. O Previous Give Up & View Solution. Check Answer 0 Next- Exit ! Hint

Explanation / Answer

c) Whenever you nned to prepare a solution for a given concentration, use volumetric flask.

Measure out x g of solid sucrose on a balance

x is calculated as : x= 0.150*molecular weight of sucrose

value of x=0.150 *342.297 =51.345g

mix a small amount of water with the solute to dissolve it, then fill with water to 250 mL mark

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