1.) Assume that each drop of Pb(NO3)2 contains 1.7 mg of Pb(NO3)2 and that each drop of KI contains 0.83 mg of KI. Given this information, determine the limiting reagent and calculate the theoretical yield for each reaction Tube 1-5 listed in the table below.

Table 1.1

Drops of water Drops of Pb(NO3)2 Drops of KI Lead:Iodine Ration

Tube 1 32 12 4 3:1

Tube 2 30 12 6 2:1

Tube 3 24 12 12 1:1

Tube 4 12 12 24 1:2

Tube 5 0 12 36 1:3

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Keith LeannonLv2

15 Sep 2019

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1. 2 drops of Cu(NO3)2 and 4 drops of KI react together and formprecipitation. write the reaction that occurred in that well.Indicate the phases of matter.

2. 3 drops of clacium nitrate and 3 drops os sodium oxalate forprecipitation. write the reaction that occurred in that well.Indicate the phases of matter.

3. 1 drop of Cu(NO3)2 and 5 drops of KI. Which was the limitingreactant in this reaction? Explain.

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5. 4 drops of Cu(NO3)2 and 2 drops of KI, which was the limitingreactannt? Explain.

6. 4 drops of Calcium Nitrate and 2 drops of Sodium Oxalate,which was the limiting reactannt? Explain.

7. NH3 + O2 ? NO + H2O,

Given the reaction above, if 14.8g NH3 react with 24.1g O2, what isthe limiting reactant and the theoretical yield (in grams) ofNO?

Start by balancing the equation. Then put each reactant through thestoichiometry to determine how many grams of NO would be producedfrom each reactant individually.

Show transcribed image text Exercise 1: Esterification Note aroma before and after boiling Structure and IUPAC name of product fo Reaction Mixture A. 10 drops CHsCOOH+10 drops octanol + 2 drops concentrated H2S04 (catalyst) 8. 10 drops CH,COOH+ 10 dropspentanolo he ale + 2 drops concentrated H2504 (catalyst) C. 1 pinch salicylic acid + 10 drops methanol + 2 drops concentrated H SO4 (catalyst) test tube. Put the first tube in a beaker of boiling water for 5 min. Pour * Prepare mixture in a contents of the tube into a beaker with 50mL distilled H,O. Waft vapor towards you to observe smel 1. Write a balanced chemical equation for each reaction showing expanded chemical formulas. C. 2. If you mixed 10 drops of ethanol and 10 drops of CHaCOOH, calculate the theoretical mass in grams of the ester formed in the reaction. Show all calculation steps. Assume the following 20 drops-1 mL Density of ethanol:0.90 g/mL [CH3COOH-17.4 M
Exercise 2: Saponification (Refer to a separate handout for instructions) Questions 2. What is the purpose of adding saturated NaCi to the reaction mixture? nnl 2. Describe the pH, appearance and sudsing ability of the soap after 24 hours. 3. Write the chemical equation for the saponification reaction, showing the structures of the reactants and products. Exercise 3: Oxidation-Reduction (Redox) Reaction mixture Observations 5 drops H:0+5 drops Tollen's reagent 5 drops glucose+ 5 drops Tollen's reagent Prepare mixture in a clear glass ornament, cover tightly with parafilm, and swirl continuously for 2 m ""Use the same ornament for the second mixture; cover with parafilm and swirl vigorously for 2 minutes. 5 drops H20+ 5 drops Benedict's reagentu 5 drops fructose + 5 drops Benedict's reagenthin enongi 5 drops glucose + 5 drops Benedict's eagentellor theongrd et lode ho **Prepare each mixture in a labeled test tube and put the tubes in a beaker of boiling water for 5 minutes. Note color change and time of reaction. Discard contents into the designated waste container. C4 Questionss t 1. What is the visible observation for a positive Tollen's test? a positive Benedict's test? 2. Write the chemical equation for the positive reaction, showing the structures of the reactants and products.

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1. In Le Chatlier's principle, can you describe the reaction between Fe+3 and SCN- with Fe(SCN)+2. The reaction turned reddish brown when Fe+3 and SCN- were mixed together. Where does the equilibrium shift?

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3. In Le Chatlier's prinicple, can you describe the precipitation that occured when NaOH and Ca(NO3)2 were mixed together? Also, after being centrifuged, the solution and the precipitation solid (white) separated. We threw out the liquid and added HCl and NaOH. Where does the equilibrium shift?

4. In Le Chatlier's prinicple, can you describe the reaction that occured when 5 drops of 0.1 M Co(NO3) is added mixed with 5 drops of concentrated HCl. The color changed into pink. When we added water, the color changed into light pink. Then when we boiled it, it turned blue. After cooling, it turned pink again. Where does the equilibrium shift?

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