Compare the 0.1 M solutions of NaCI and TSP. Which solution has the higher condu

Question

Compare the 0.1 M solutions of NaCI and TSP. Which solution has the higher conductivity? Draw a picture of each solution that supports your answer. What does the information tell you about the compound type and formula? Pure HCl is a molecular compound but when dissolved in water, HCI (aq) is an acid. Identify the ions in HCl (aq). What part of HCI (aq) makes it an acid? Draw a picture that supports your NaOH is an ionic compound and a base. Identify the ions contained in this compound. What part of NaOH makes it a base? Draw a picture that supports our answer. NaOH and ethanol (C2H50E) contain OH. Why is NaOH a base whereas ethanol is not. Draw a picture of each solution that supports your answer The pH and conductivity of a strong acid are not the same as the pH and conductivity of the same concentration of a weak acid. Draw a picture of a strong acid and weak acid that shows this difference in pH and conductivity. Explain how your observation and data collected about own liquid helped you determine its identity. Explain how your observation and data collected about unknown solid helped you determined its identity. What property of substance did you use for separation of sugar and liquid in soda? List at least two other possible properties you could use for separation. Compare the mass of sugar in regular soda that you determined in this lab with the mass that you estimated in lab 1. Comment on any differences. Calculate error between the mass of sugar you estimated and what the label reports. What is distillation? What does it do? Draw the distillation apparatus. Were you able to remove all the water from your original ethanol-water mixture? Give reasons Did you see a trend in the ethanol composition for each successive distillation? If so, describe the trend. Include numbers

Explanation / Answer

Solution of TSP will have higher conductivity. This indicates that TSP has more number of ions than NaCl. Consider the following reactions:

NaCl <==> Na+   + Cl-

Na3PO4   <==> 3Na+ + Po4^3-

1 molecule of NaCl is consisit of one Na+ and one Cl- and so its gives only two ions in solution. Whereas na3PO4 is composed of three Na+ and one phosphate ion . Thus when dissolved in water it produces four ions.

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H <==> H+   + Cl-

In aqueous solution HCl gives H+ and Cl-.Due to the formation of H+ , HCl acts as an acid.

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NaOH <==> Na+ +OH-

NaOh is composed of two ions Na+ and OH-. Due to the presence of OH_ , it acts as base.

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NaOH <==>Na+   +OH-

In water NaOH can dissociate to OH-. Such, dissociation is not possible in C2H5OH as C-C bonds are very strong.

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