What do you expect the temperature of the reaction to be during reflux? Why?
What do you expect the temperature of the reaction to be during reflux? Why?
Homework Answers
Esters can be hydrolyzed into their carboxylic acid and alcohol components under either acidic or basic conditions. The chemical reaction between ester and sodium hydroxide is a saponification reaction.
Saponification of methyl salicylate is a hydrolysis reaction. This reaction occurs in the presence of a base (instead of acid), the carboxylic acid, and phenolic -OH groups on salicylic acid are ionized. This compound exists as the sodium salt of salicylic acid sodium salicylate.
Saponification reaction is an exothermic reaction. So, the temperature of the reaction mixture to be during reflux increases.
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What do you expect the temperature of the reaction to be during reflux? Why?
In the Sponification of Methyl Salicylate, what do you expect the temperature of the reaction mixture...
In the Sponification of Methyl Salicylate, what do you expect the temperature of the reaction mixture to be during reflux? Why?
Reflux procedure and report 1) You start at the same time and in same devices reflux of 40 ml of ...
Reflux procedure and report 1) You start at the same time and in same devices reflux of 40 ml of hexane and in another one 40 ml of benzene. Which device will start reflux first? Explain 2) Why reflux is a referable method of running chemical reactions that require heating? Why not just heat your reaction content in the Erlenmeyer flask? 3) Why do we turn heat off first and water only after your device is at room temperature? 4)...
4. During your experiment, why do you think the temperature of the reaction increased as the...
4. During your experiment, why do you think the temperature of the reaction increased as the reaction proceeded? Use scientific reasoning in your explanation.
Why can water not be used during the reaction? Cl Cl DMF (cat.) DCM, reflux
Why can water not be used during the reaction?
Cl Cl DMF (cat.) DCM, reflux
QUESTION 3 Do you expect this diels-alder reaction to require fairly low temperature, high temperature, or...
QUESTION 3 Do you expect this diels-alder reaction to require fairly low temperature, high temperature, or something else? a. temperature will not matter b. high temperature c. very low temperature, below OC to prevent side reactions d. low temperature QUESTION 4 Which is the correct order of reactivity (most reactive to least reactive) toward electrophilic aromatic substitution? QUESTIONS QUESTION 3 Do you expect this diels-alder reaction to require fairly low temperature, high temperature, or something else a temperature will not...
Need help! 3. Do you expect the following reaction to be spontaneous? Why or why not-qualitatively?...
Need help! 3. Do you expect the following reaction to be spontaneous? Why or why not-qualitatively? Now be quantitative give the temperature range over which it IS spontaneous. Please calculate the equilibrium constant at-10.0 °C -log a s-log K Sustancc N(g) NOg) NOg) N O(g) 472.704 90.25 33.2 81.6 83.72 455.5 87.6 51.30 103.7 39.41 91.6 53.3 210.8 240.1 220.0 312.17
predict the products of the reaction at reflux and room temperature NaOCH (3-bromopropylbenzene
predict the products of the reaction at reflux and room
temperature
NaOCH (3-bromopropylbenzene
What is reflux and why are reactions mixtures heated under reflux?
What is reflux and why are reactions mixtures heated under reflux?
often conducted at reflux? What would be the result of reaction in a round-bottom flask or...
often conducted at reflux? What would be the result of reaction in a round-bottom flask or Erlenmeyer flask with- 1. Define the term "reflux." 2. Why are reactions often conducted at reflux simply boiling this reaction in a round-bottom flask out a reflux condenser? 3. Why must the n-butyl acetate product be rigorously dried prior to in analyor the role of the sodium iodide in today's experiment? Why is only a tiny amount needed? 5. Propose mechanisms for the formation...
Do you expect the detonating reaction between hydrogen gas and oxygen gas forming water vapor (oxyhydrogen...
Do you expect the detonating
reaction between hydrogen gas and oxygen gas forming water vapor
(oxyhydrogen reaction) to have a temperature limit above or below
which the reaction will not be spontaneous? Explain your answer and
estimate such temperature from thermodynamic data found online.
2. (2 pts) Do you expect the detonating reaction between hydrogen gas and oxygen gas forming water vapor (oxyhydrogen reaction) to have a temperature limit above or below which the reaction will not be spontaneous? Explain...
Reflux procedure and report 1) You start at the same time and in same devices reflux of 40 ml of hexane and in another one 40 ml of benzene. Which device will start reflux first? Explain 2) Why reflux is a referable method of running chemical reactions that require heating? Why not just heat your reaction content in the Erlenmeyer flask? 3) Why do we turn heat off first and water only after your device is at room temperature? 4)...
Why can water not be used during the reaction?
Cl Cl DMF (cat.) DCM, reflux
QUESTION 3 Do you expect this diels-alder reaction to require fairly low temperature, high temperature, or something else? a. temperature will not matter b. high temperature c. very low temperature, below OC to prevent side reactions d. low temperature QUESTION 4 Which is the correct order of reactivity (most reactive to least reactive) toward electrophilic aromatic substitution? QUESTIONS QUESTION 3 Do you expect this diels-alder reaction to require fairly low temperature, high temperature, or something else a temperature will not...
Need help! 3. Do you expect the following reaction to be spontaneous? Why or why not-qualitatively? Now be quantitative give the temperature range over which it IS spontaneous. Please calculate the equilibrium constant at-10.0 °C -log a s-log K Sustancc N(g) NOg) NOg) N O(g) 472.704 90.25 33.2 81.6 83.72 455.5 87.6 51.30 103.7 39.41 91.6 53.3 210.8 240.1 220.0 312.17
predict the products of the reaction at reflux and room
temperature
NaOCH (3-bromopropylbenzene
often conducted at reflux? What would be the result of reaction in a round-bottom flask or Erlenmeyer flask with- 1. Define the term "reflux." 2. Why are reactions often conducted at reflux simply boiling this reaction in a round-bottom flask out a reflux condenser? 3. Why must the n-butyl acetate product be rigorously dried prior to in analyor the role of the sodium iodide in today's experiment? Why is only a tiny amount needed? 5. Propose mechanisms for the formation...
Do you expect the detonating
reaction between hydrogen gas and oxygen gas forming water vapor
(oxyhydrogen reaction) to have a temperature limit above or below
which the reaction will not be spontaneous? Explain your answer and
estimate such temperature from thermodynamic data found online.
2. (2 pts) Do you expect the detonating reaction between hydrogen gas and oxygen gas forming water vapor (oxyhydrogen reaction) to have a temperature limit above or below which the reaction will not be spontaneous? Explain...
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