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Volumetric dilution. You are tasked to prepare 100.0mL of 0.691MHCl(aq) using a pipettor and a 100mL volumetric flask. You are provided with a concentrated 12.0MHCl(aq)
Volumetric dilution. You are tasked to prepare 100.0mL of 0.691MHCl(aq) using a pipettor and a 100mL volumetric flask. You are provided with a concentrated 12.0MHCl(aq) solution. What volume of 12.0MHCl(aq) do you measure to prepare the new solution? Show your calculated work. (Refer to Example 2 in Section 1L of the Experiment 1 Background.) (3 points) The error in the concentration of the 12.0MHCl(aq) solution is 0.6M. The error of the pipettor is 0.01mL, and the error of the volumetric flask is 0.1mL. Calculate the error in the concentration of the 0.691MHCl(aq) solution to be prepared. Show your calculated work. (Refer to Example 2 of Section 1 I of the Experiment 1 Background.) (4 points) To prepare the new solution, you are combining concentrated acid and water. To safely combine these two chemicals, they must be added in a certain order. In your own words, describe in 1-2 sentences why the solution preparation instructions in Section 1L prompt you to fill the volumetric flask half-full with water before adding the concentrated acid. (Refer to the Laboratory Safety Regulations.) (2 points) Should the new solution be prepared at the lab bench or in the fume hood? In your own words, describe why in 1-2 sentences. (2 points)
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