5. Define catalyst. What is the catalyst in this lab? PURPOSE:• To synthesize esters and to identify the odor of each●To write chemical equations for the formation of each esterAPPARATUS AND MATERIALS:test tubes400 mL beakerhotplateSAFETY:Note: ethanoic acid I;is labelled Glacial Acetic AcidPROCEDURE:Lab - MAKING ESTERSdrop bottles of:Sulfuric acid is extremely corrosive. Avoid direct contact. If any touches your skin, wash it off immediately. Note theeyewash station.Alcohols and carboxylic acids are flammable. Use caution.TEST TUBEconcentrated sulfuric acidmethanolethanol1-octanolABCDE1. Prepare a hot water bath using the 400mL beaker and hotplate. Adjust the heating control to maintain a watertemperature of about 70°C.2. Label 5 test tubes A to F. Place the test tubes on a test tube rack3. In the appropriate test tube, add 0.5 mL (10 drops) of alcohol followed by 0.5 mL (10 drops) of the carboxylic acidaccording to the table below.CARBOXYLIC ACID0.25 g salicylic acid0.5 mL ethanoic acid0.5 mL butanoic acid0.5 mL ethanoic acid0.5 mL ethanoic acidbutanoic (butyric) acidn-pentanolsalicylic acid(solid)ALCOHOL0.5 mL methanolpentan-1-ol0.5 mL ethanol0.5 mL ethanol0.5 mL 1-octanol4. Add 4-5 drops of concentrated sulfuric acid to each test tube. (caution, it is corrosive!) I will add it for you5. Place the test tubes in a hot water bath (use 400 ml beaker with about 200 mL of water)and gently heat atapproximately 70 °C for 10 minutes.6. Cool the test tubes by immersing them in a cold water bath.7. Add 5 mL of tap water to each of the test tubes. The ester will form a layer above the water.8. Carefully note the odor of the contents of each test tube.9. Discard the contents of the test tubes in the large beaker in the fume hood at the back of the room.

The substance which usually increases the rate of reaction without itself being consumed during the…

Answered: 5. Define catalyst. What is the…

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Chemistry

5. Define catalyst. What is the catalyst in this lab?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question 18 of 19 Submit Which of the following statements is false about catalysts? A) Enzymes are biological catalysts. B) A catalyst is consumed in a chemical reaction. C) A catalyst increases reaction rate by providing an alternate reaction pathway with a lower activation energy. D) A catalyst may undergo change during a reaction but is unchanged at the end of a reaction. E) Catalysts may be homogeneous or heterogeneous.
1. a. Explain in your own words, what is meant by the term "activation energy." b. How can the idea of activation energy be used to explain the temperature dependance of rate? c. How can activation energy be used to explain why a catalyst increases the rate of a chemical reaction
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Determine each type of reaction. NH,NO3 (s) → N,O (g) +2 H2O (1) Choose... CO (g) + 2 H2 (g) → CH3OH (1) Choose.. CaCl2 (aq) + Na,CO3 (aq) → 2 NaCl (aq) + CACO3 (s) Choose.. 2 C2H2 (g) + 5 02 (g) → 4 CO2 (g) + 2 H2O (1) Choose... | 2 Fe (s) + 6 HC1 (aq) → 2 FeCl3 (aq) + 3 H2 (g) Choose...
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2. A catalyst is a substance that increases the rate of a chemical reaction but is not consumed by the reaction. A catalyst works by lowering the activation energy for a reaction, making it easier for reactants to form products. What effect, if any, would a catalyst have on a system already at equilibrium? Briefly explain.
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1. What chemical reaction was performed to study the effect of temperature on the reaction rate? Show the equation.
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how to find reaction rates
For the exothermic reaction 4 NH3(g) +7 02(g)- => 4 NO2(g) + 6 H20(g) which change will increase the quantity of NO2 in the mixture? O A. increasing temperature OB. decreasing container volume OC. adding Ne(g) O D. adding H20(g) O E. adding a catalyst
40. The reaction that produces ammonia is represented by a balanced equation, shown below. A catalyst can be used to increase the rate of the reaction. N2(g) + 3H2(g) → 2NH3(g) + energy A potential energy diagram for the reaction is shown below. C A Reaction Coordinate What occurs when a catalyst is added to a chemical reaction? A. an alternate reaction pathway lowers activation energy, changing the magnitude of both B and C B. new reactants are added which increases their potential energy, changing the magnitude of both A and D C. different products are produced with a lower potential energy, changing the magnitude of both A and B D. the temperature is increased so there are more effective collisions, which changes the magnitude of A and C