Ethyl acetate reacts with sodium hydroxide when the two are mixed. The reaction, called ester hydrolysis, yields products ethyl alcohol and sodium acetate. The equation is CH₂CO₂C₂H₂(aq) + NaOH(aq) --> C₂H₂OH(aq) + CH³CO₂Na(aq) The following data were obtained: Initial Concentration of CH₂CO₂C₂Hs (mol L) 0.010 0.020 0.020 The rate law for this reaction is: Initial Concentration of NaOH (mol L-¹) 0.005 0.010 0.005 Rate-k[CH₂CO₂C₂H₁² [NaOH] Rate = K[CH₂CO₂C₂H5] + [NaOH] Rate-k (CH₂CO₂C₂H₁]²[NaOH)² Rate-k[CH₂CO₂C₂H5] [NaOH] Initial Rate of Formation of C₂H5OH (mol L-1¹) 5.40 X 10€ 2.16 X 105 1.08 X 10³
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![Ethyl
acetate reacts with sodium hydroxide when the two are mixed. The reaction, called ester hydrolysis, yields products ethyl alcohol
and sodium acetate. The equation is CH3CO₂C₂H5(aq) + NaOH(aq) --> C₂H5OH(aq) + CH3CO₂Na(aq) The following data were
obtained:
Initial Concentration
of CH3CO₂C₂Hs
(mol L-¹)
Initial Concentration
of NaOH
(mol L-¹)
0.005
0.010
0.005
0.010
0.020
0.020
The rate law for this reaction is:
O Rate-k[CH3CO₂C₂H5]²[NaOH]
O Rate-k[CH3CO₂C₂H5] + [NaOH]
O Rate-k[CH3CO₂C₂H5]²[NaOH)²
O Rate-k[CH3CO₂C₂H5] [NaOH]
Initial Rate of Formation
of C₂H5OH
(mol L-1¹)
5.40 x 10-6
2.16 x 10-5
1.08 X 105](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F885ad811-e1fc-4fdd-9f4a-b82767372835%2Fef71d63c-4df5-4bd0-b5c8-d6662dc30ae1%2F5esnus_processed.png&w=3840&q=75)
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