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4. (3 pts) You accidentally add too little hydrazine (H2NNH2, 0.25 mL) to the reaction test...
3. (3 pts) You accidentally add too much hydrazine solution (H2NNH2, 30 ml) to the reaction....
3. (3 pts) You accidentally add too much hydrazine solution (H2NNH2, 30 ml) to the reaction. How would you correct this mistake? If it was left unfixed, what do you predict the effect on the yield to be? NO2 o NO2 HANNH_HO 220 °C, 3-4 min a.) NaOH/H,O, Na, $,04 -100 °C, 5 min ОН NH -OH NH b.) CH,COOH OH HO (Triethylene glycol - solvent) O 3-nitrophthalic acid (Does NOT chemiluminesce.) 3-nitrophthalhydrazide (Does NOT chemiluminesce.) NH₂ i NH NH...
For the following questions, provide the best possible solution to solve common mistakes that could occur...
For the following questions, provide the best possible solution to solve common mistakes that could occur in the luminol synthesis. If you believe there is no problem, simply indicate so. Assume that all lab equipment (thermometer, heating mantle, etc) are working properly. Briefly explain your answer. The question will receive a zero if no explanation is provided! 1. (2 pts) Sketch the diagram below that would illustrate the set up for the first step of luminol synthesis. Clearly label each...
1. (2 pts) Sketch the diagram below that would illustrate the set up for the first...
1. (2 pts) Sketch the diagram below that would illustrate the set up for the first step of luminol synthesis. Clearly label each piece of lab equipment you would use. 2. (3 pts) Predict the products of the reactions that take place in the practical. NO2 OH OH HNNH, TEG, 220 °C Na 9,04 NaOH 3. (3 pts) You accidentally add too much hydrazine solution (H2NNH, 30 mL) to the reaction. How would you correct this mistake? it it was...
my starting reaction weight for 3-nitrophthalic acid is 6.65 g 2. (12 pts/1 pt per box)...
my starting reaction weight for 3-nitrophthalic acid is 6.65
g
2. (12 pts/1 pt per box) Determine the mmol as well as the mass or volume of each reagent that would be required if the reaction was performed starting with a mass of 3-nitrophtalic acid equal to your UIN number divided by 108 (ex. 678459876/108 = 6.78 g of 3-nitrophtalic acid (98% purity)). Using your mass of 3-nitrophthalic acid and the new equivalent values, determine what quantities of reactants and...
DQuestion 3 2 pts In lab, you add 2.07 g salicylic acid to a 125 mL...
DQuestion 3 2 pts In lab, you add 2.07 g salicylic acid to a 125 mL Erlenmeyer flask, as listed in the procedure. You carefully add 4.0 mL acetic anhydride and have your TA add 5 drops of sulfuric acid After completing the synthesis and filtering. you place the crystals to dry on an evaporating dish that weights 21.616 g. After drying, the crystals and evaporating dish weigh 23.404. Calculate the percent yield of aspirin Insert the value as a...
3. In the lab today you prepared oxygen gas by decomposing hydrogen peroxide. There are many...
3. In the lab today you prepared oxygen gas by decomposing hydrogen peroxide. There are many other chemical reactions that generate gases as one of their products. Lets consider the reaction between zinc metal and hydrochloric acid as such an example. a) (2 pts) What are the products of the chemical reaction that occurs when zinc metal is added to an aqueous solution of Hydrochloric acid? b) (3 pts) Write the chemical equation that represents this reaction? c) (4 pts)...
Part I Color changes of Methyl Violet. We will study the following reaction: HMV (aq) +...
Part I Color changes of Methyl Violet. We will study the following reaction: HMV (aq) + MV (aq) + H* (aq) yellow greenish-blue violet Step 1. Place about 4 mL of distilled water in a regular test tube. Add two drops of methyl violet indicator. Record the color of the solution. Violet Next, add drop by drop, add 6M HCI. This forces equilibrium to be shifted to the left or right-circle the right answer). Adding HCl changes color from to...
Running the Reaction Add 0.100 g benzil and 0.30 mL 95% ethanol to a 3-mL conical vial. Place a s...
Determine the theoretical yield and limiting reagent
Running the Reaction Add 0.100 g benzil and 0.30 mL 95% ethanol to a 3-mL conical vial. Place a spin vane in the vial and attach an air condenser. Heat the mixture with an aluminum block (90-100°C) while stirring until the benzil has dissolved (see inset in Tech- nique 6, Figure 6.1A). Using a 9-inch Pasteur pipette, add dropwise 0.25 mL of an aqueous potassium hydroxide solution' downward through the condenser into the...
Chemical Table (4 pts): 1) Fill in the reaction table below. Make sure you correctly calculate the molar amounts of...
Chemical Table (4 pts): 1) Fill in the reaction table below. Make sure you correctly calculate the molar amounts of your reactants. name formula mol.-eq. Mw m mol amount 3-nitrobenzamide 1.0 g 5.75% Bleach (aq.) 9.0 mL 1 M Aqueous NaOH 12 mL product 2) Calculate the Theoretical Yield of your product, i.e. the mass you would expect to recover (assuming 100% conversion to product).
Hi please can you answer 4 questions .. thanks for help Factoes hich Infuence The Rates...
Hi
please can you answer 4 questions .. thanks for help
Factoes hich Infuence The Rates Of Resction Name Date Prelab Question Lab Instructor Lab Section a. List the potential ehemical hazards in this experiment and tell how you wi handle them in order to make this experiment safe for you and others in the laboratory b. List the potential procedural hazards in this experiment and tell how you will handle them in order to make this experiment safe for...
3. (3 pts) You accidentally add too much hydrazine solution (H2NNH2, 30 ml) to the reaction. How would you correct this mistake? If it was left unfixed, what do you predict the effect on the yield to be? NO2 o NO2 HANNH_HO 220 °C, 3-4 min a.) NaOH/H,O, Na, $,04 -100 °C, 5 min ОН NH -OH NH b.) CH,COOH OH HO (Triethylene glycol - solvent) O 3-nitrophthalic acid (Does NOT chemiluminesce.) 3-nitrophthalhydrazide (Does NOT chemiluminesce.) NH₂ i NH NH...
For the following questions, provide the best possible solution to solve common mistakes that could occur in the luminol synthesis. If you believe there is no problem, simply indicate so. Assume that all lab equipment (thermometer, heating mantle, etc) are working properly. Briefly explain your answer. The question will receive a zero if no explanation is provided! 1. (2 pts) Sketch the diagram below that would illustrate the set up for the first step of luminol synthesis. Clearly label each...
1. (2 pts) Sketch the diagram below that would illustrate the set up for the first step of luminol synthesis. Clearly label each piece of lab equipment you would use. 2. (3 pts) Predict the products of the reactions that take place in the practical. NO2 OH OH HNNH, TEG, 220 °C Na 9,04 NaOH 3. (3 pts) You accidentally add too much hydrazine solution (H2NNH, 30 mL) to the reaction. How would you correct this mistake? it it was...
my starting reaction weight for 3-nitrophthalic acid is 6.65
g
2. (12 pts/1 pt per box) Determine the mmol as well as the mass or volume of each reagent that would be required if the reaction was performed starting with a mass of 3-nitrophtalic acid equal to your UIN number divided by 108 (ex. 678459876/108 = 6.78 g of 3-nitrophtalic acid (98% purity)). Using your mass of 3-nitrophthalic acid and the new equivalent values, determine what quantities of reactants and...
DQuestion 3 2 pts In lab, you add 2.07 g salicylic acid to a 125 mL Erlenmeyer flask, as listed in the procedure. You carefully add 4.0 mL acetic anhydride and have your TA add 5 drops of sulfuric acid After completing the synthesis and filtering. you place the crystals to dry on an evaporating dish that weights 21.616 g. After drying, the crystals and evaporating dish weigh 23.404. Calculate the percent yield of aspirin Insert the value as a...
3. In the lab today you prepared oxygen gas by decomposing hydrogen peroxide. There are many other chemical reactions that generate gases as one of their products. Lets consider the reaction between zinc metal and hydrochloric acid as such an example. a) (2 pts) What are the products of the chemical reaction that occurs when zinc metal is added to an aqueous solution of Hydrochloric acid? b) (3 pts) Write the chemical equation that represents this reaction? c) (4 pts)...
Part I Color changes of Methyl Violet. We will study the following reaction: HMV (aq) + MV (aq) + H* (aq) yellow greenish-blue violet Step 1. Place about 4 mL of distilled water in a regular test tube. Add two drops of methyl violet indicator. Record the color of the solution. Violet Next, add drop by drop, add 6M HCI. This forces equilibrium to be shifted to the left or right-circle the right answer). Adding HCl changes color from to...
Determine the theoretical yield and limiting reagent
Running the Reaction Add 0.100 g benzil and 0.30 mL 95% ethanol to a 3-mL conical vial. Place a spin vane in the vial and attach an air condenser. Heat the mixture with an aluminum block (90-100°C) while stirring until the benzil has dissolved (see inset in Tech- nique 6, Figure 6.1A). Using a 9-inch Pasteur pipette, add dropwise 0.25 mL of an aqueous potassium hydroxide solution' downward through the condenser into the...
Chemical Table (4 pts): 1) Fill in the reaction table below. Make sure you correctly calculate the molar amounts of your reactants. name formula mol.-eq. Mw m mol amount 3-nitrobenzamide 1.0 g 5.75% Bleach (aq.) 9.0 mL 1 M Aqueous NaOH 12 mL product 2) Calculate the Theoretical Yield of your product, i.e. the mass you would expect to recover (assuming 100% conversion to product).
Hi
please can you answer 4 questions .. thanks for help
Factoes hich Infuence The Rates Of Resction Name Date Prelab Question Lab Instructor Lab Section a. List the potential ehemical hazards in this experiment and tell how you wi handle them in order to make this experiment safe for you and others in the laboratory b. List the potential procedural hazards in this experiment and tell how you will handle them in order to make this experiment safe for...
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