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12 Nov 2019
Lab Questions 1. Suppose you have an unlabelled solution which contains either KCl or K2CO,, and you need to test the solution to determine which of the two substances is dissolved. Review your experimental results with solutions containing CT and CO, Which of the three test reagents from this experiment would give two different results with these two ions so than you can use it to determine the identity of the solution? Write the net ionic reaction that could be observed, and include the phase subscripts (1 pt) 2. Suppose you have an unlabelled solution that contains either KCl or K2SO4, and you need a test to determine which of the two substances is dissolved. You need a cation whose result with Cr is different from its result with SO42 Would you use Pb"2, Ba 2, or Na"1 to determine the identity of the solution? Use rules 1 and 4 for water-soluble salts in Appendix E to determine which cation will precipitate with one anion, but not the other. Write the identifying net ionic reaction for this precipitate. Include the correct coefficients, ionic charges, and phase subscripts (1 pt) Review your experimental results and the solubility rules. Also, review Table 4.4 in the text for acid-base reactions that create gases. Write the balanced net ionic reactions for the following aqueous mixtures. Include the correct coefficients, ionic charges, and phase subscripts. (1 pt) a. HBrag) and Na CO(a) b. AgNOseg) and KClag 3.
Lab Questions 1. Suppose you have an unlabelled solution which contains either KCl or K2CO,, and you need to test the solution to determine which of the two substances is dissolved. Review your experimental results with solutions containing CT and CO, Which of the three test reagents from this experiment would give two different results with these two ions so than you can use it to determine the identity of the solution? Write the net ionic reaction that could be observed, and include the phase subscripts (1 pt) 2. Suppose you have an unlabelled solution that contains either KCl or K2SO4, and you need a test to determine which of the two substances is dissolved. You need a cation whose result with Cr is different from its result with SO42 Would you use Pb"2, Ba 2, or Na"1 to determine the identity of the solution? Use rules 1 and 4 for water-soluble salts in Appendix E to determine which cation will precipitate with one anion, but not the other. Write the identifying net ionic reaction for this precipitate. Include the correct coefficients, ionic charges, and phase subscripts (1 pt) Review your experimental results and the solubility rules. Also, review Table 4.4 in the text for acid-base reactions that create gases. Write the balanced net ionic reactions for the following aqueous mixtures. Include the correct coefficients, ionic charges, and phase subscripts. (1 pt) a. HBrag) and Na CO(a) b. AgNOseg) and KClag 3.