Constant boiling HCl has a concentration of 11.6 M. Your laboratory assistant is going to dilute...

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Chemistry

Constant boiling HCl has a concentration of 11.6 M. Yourlaboratory assistant is going to dilute this acid for you to createa stock solution of HCl for you to use in this experiment. Whatvolume of the 11.6 M HCl must the assistant add to one litervolumetric flask so that the concentration of the stock solutionwill be 0.62 M after dilution to the mark the water?

What is the pH of this stock solution?

You will now use this 0.62 M HCl solution to carry out a seriesof dilutions, measuring the pH of each diluted sample. Calculatethe [Cl-] and [H+] concentrations and the pH of eachsample.

Sample A will be produced bby pipetting 1.00 mL of the stocksolution into a 25 mL volumetric, and diluting to the volume withdistilled water.

[Cl-]=

[H+]=

pH=

Sample B will be produced by pipetting 1.00 mL of sample A intoa 25 mL volumetric, and diluting to volume with distilledwater.

[Cl-]=

[H+]=

pH=

Sample C will be produced by pipetting 1.00 mL of sample B intoa 25 mL volumetric, and diluting to volume with distilledwater.

[Cl-]=

[H+]=

pH=

Sample D will be produced by pipetting 1.00 mL of sample C intoa 25 mL volumetric, and diluting to volume with distilled water

[Cl-]=

[H+]=

pH=

Sample E will be produced by pipetting 1.00 mL of sample D intoa 25 mL volumetric, and diluting to volume with distilled water

[Cl-]=

[H+]=

pH=

Sample F will be produced by pipetting 1.00 mL of sample E intoa 25 mL volumetric, and diluting to volume with distilled water

[Cl-]=

[H+]=

pH=

Answer & Explanation Solved by verified expert
3.6 Ratings (385 Votes)
HCl concentration M1 116 volume of HCl V1 concentration of stock solution M2 062 volume of stock solution V2 1 lit M1 V1 M2 V2 116 x V1 062 x 1 V1 00534 L 534 mL volume of HCl 534 mL pH log 062 021 pH of    See Answer
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