16 The thermal energy available to a chemical reaction increases with increasing temperature. What is the...
16 The thermal energy available to a chemical reaction increases with increasing temperature.
What is the very simple equation you would use to determine thermal energy at any particular temperature?
Thermal energy =
17. Water is the solvent for your reaction. What is the temperature of the reaction under reflux?
Homework Answers
Ans :
16) Thermal energy = mass x specific heat capacity x temperature difference
where,
Q = Thermal energy
m = mass ofthe given substance
c = specific heat capacity
T
= temperature difference
17) The main purpose of refluxing a solution is to thermally accelerate the reaction by conducting it at an elevated, controlled manner temperature (i.e. the solvent's boiling point).Therefore, if water is solvent, then the temperature under reflux is equal to the boiling point of water. Here it is 1000 C.
Add Answer to:
16 The thermal energy available to a chemical reaction increases
with increasing temperature.
What is the...
Explain the differences between kinetic energy and thermal energy. What is internal energy of a chemical reaction?...
Explain the differences between kinetic energy and thermal energy. What is internal energy of a chemical reaction? Explain clearly using an equation
During a reaction, thermal energy from the environment is converted into chemical energy stored in the...
During a reaction, thermal energy from the environment is converted into chemical energy stored in the products. Which of the following can you determine? A. The reaction is single replacement. B. The reaction is exothermic. C. The reaction is a decomposition. D. The reaction is endothermic.
How does a positive catalyst generally affect a chemical reaction? A catalyst increases the temperature of...
How does a positive catalyst generally affect a chemical reaction? A catalyst increases the temperature of the reaction which speeds the reaction rate. A catalyst reduces the frequency factor which speeds the reaction rate. A catalyst reduces the amount of solvent required which slows the reaction rate. A catalyst reduces activation energy which speeds the reaction rate.
Explain why increasing the temperature increases the reaction rate. Can you cite a quantitative relationship between...
Explain why increasing the temperature increases the reaction rate. Can you cite a quantitative relationship between the two (a math equation)? At 20.0 degree C the rate constant for a reaction is 0.125M^-1min^-1. What will be the value of the rate constant at 32.0 degree C? the activation energy for the reaction is 57.2kJ/mole
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)...
Reaction Rates and Temperature 31 Review Constants i Peric The rate constant of a chemical reaction...
Reaction Rates and Temperature 31 Review Constants i Peric The rate constant of a chemical reaction increased from 0.100 - 2005 - pon raising the temperature from 250 C 350 C Learning Goal To use the Athenius equation to calculate the activation energy As temperature rises, the average kinetic energy of molecules increases. In a chemical reaction, this means at a higher percentage of the molecules possess the required activation energy and the reaction goes faster. This relationship is shown...
To use the Arrhenius equation to calculate the activation energy. As temperature rises, the average kinetic...
To use the Arrhenius equation to calculate the activation energy. As temperature rises, the average kinetic energy of molecules increases. In a chemical reaction, this means that a higher percentage of the molecules possess the required activation energy, and the reaction goes faster. This relationship is shown by the Arrhenius equation k=Ae−Ea/RT where k is the rate constant, A is the frequency factor, Ea is the activation energy, R = 8.3145 J/(K⋅mol) is the gas constant, and T is the...
What is the activation energy (in kJ/mol) of a reaction whose rate constant increases by a...
What is the activation energy (in kJ/mol) of a reaction whose rate constant increases by a factor of 89 upon increasing the temperature from 307 K to 343 K? R = 8.314 J/(mol • K).
A kettle of water has just boiled. At that moment the water inside contains roughly 775 kJ of thermal energy. a) After t...
A kettle of water has just boiled. At that moment the water inside contains roughly 775 kJ of thermal energy. a) After three hours resting on the counter, the water in the kettle has cooled to room temperature, losing about 170 kJ of thermal energy in the process. Where did that thermal energy go, and by what process(es)? b) Has the quality of the water’s thermal energy increased or decreased? Explain. You have just invented a new light bulb which...
To use the Arrhenius equation to calculate the activation energy. As temperature rises, the average kinetic...
To use the Arrhenius equation to calculate the activation energy. As temperature rises, the average kinetic energy of molecules increases. In a chemical reaction, this means that a higher percentage of the molecules possess the required activation energy, and the reaction goes faster. This relationship is shown by the Arrhenius equation k=Ae−Ea/RT where k is the rate constant, A is the frequency factor, Ea is the activation energy, R = 8.3145 J/(K⋅mol) is the gas constant, and T is the...
Explain the differences between kinetic energy and thermal energy. What is internal energy of a chemical reaction? Explain clearly using an equation
Explain why increasing the temperature increases the reaction rate. Can you cite a quantitative relationship between the two (a math equation)? At 20.0 degree C the rate constant for a reaction is 0.125M^-1min^-1. What will be the value of the rate constant at 32.0 degree C? the activation energy for the reaction is 57.2kJ/mole
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)...
Reaction Rates and Temperature 31 Review Constants i Peric The rate constant of a chemical reaction increased from 0.100 - 2005 - pon raising the temperature from 250 C 350 C Learning Goal To use the Athenius equation to calculate the activation energy As temperature rises, the average kinetic energy of molecules increases. In a chemical reaction, this means at a higher percentage of the molecules possess the required activation energy and the reaction goes faster. This relationship is shown...
Most questions answered within 3 hours.
-
Mr. and Mrs. Brown report taxable income of $130,000 in 2018. In
addition, they report the...
asked 34 minutes ago -
You capture data by having 8 people fill in 30 small dots on a
piece of...
asked 4 hours ago -
What are the z-values such that 70% of the area lies in the
middle of the...
asked 6 hours ago -
You borrow $29,500 to purchase a brand new car. The interest
rate is 6%, and the...
asked 5 hours ago -
The amount of time it takes an asteroid, whose average distance
from the Sun is 4.70...
asked 6 hours ago -
A 0.289 kg mass slides on a frictionless floor with a speed of
1.34 m/s. The...
asked 6 hours ago -
15.A box contains five red balls, three green balls, and two
yellow balls. Suppose you select...
asked 8 hours ago -
Assume you are given the following for Stackelberg industries:
Return on Assets (ROA) = 8%
Debt...
asked 7 hours ago -
an engineer proposes to use mmWave in 5G network to
increase data rate.
What are the...
asked 7 hours ago -
Explain the idea behind using SEMIJOIN in distributed
query processing.
asked 7 hours ago -
why
is context important in selecting and applying guidelines and
principles for interface design?
illustrate your...
asked 7 hours ago -
In a certain board game, a player rolls two fair six-sided dice
until the player rolls...
asked 8 hours ago