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When you take the reverse reaction of a spontaneous process this is called nonspontaneous process true or false?
True. When you take the reverse reaction of a spontaneous process, it typically requires an input of energy and is considered a nonspontaneous process. Spontaneous processes occur naturally without external energy, while nonspontaneous processes do not occur without energy being supplied.
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What kind of reaction occurs when the entropy change of an endothermic reaction is negative?
The reaction is exothermic
How can a galvanic cell become electrolytic cell?
A galvanic cell can become an electrolytic cell by applying an external voltage that is of opposite polarity to the cell's spontaneous voltage. This external voltage can overcome the natural tendency of the cell to generate electricity and drive a non-spontaneous chemical reaction in the reverse direction, converting it into an electrolytic cell.
How can galvanic cell become and electrolytic cell?
A galvanic cell can become an electrolytic cell by applying an external voltage greater than the cell's electromotive force (EMF). This reverse process forces the spontaneous redox reaction to go in the opposite direction, causing the cell to consume electrical energy to drive a non-spontaneous reaction. Essentially, the galvanic cell, which generates electricity from chemical reactions, can be converted into an electrolytic cell that requires electricity to induce chemical changes. This transformation is commonly seen in processes like electrolysis.
Why is saponification reaction is considered to be the reverse of an esterification reaction?
saponification is considered to be the reverse process of an esterification reaction due to the fact that esterification is combining an alcohol and a carboxylic acid but a saponification is breaking apart the ester by adding an NaCl molecule (soap) to the chain of carbons.
What substance would need to be added in order to reverse the reaction?
To determine the substance needed to reverse a specific chemical reaction, one must consider the products and the reaction conditions. Generally, adding the reactants or a catalyst that promotes the reverse reaction can help shift the equilibrium back. For example, if the reaction is exothermic, increasing temperature might favor the reverse reaction. Additionally, applying Le Chatelier's principle can guide the choice of substances to reverse the reaction efficiently.
What is the reverse of a spontaneous reaction, and how does it differ from a nonspontaneous reaction?
The reverse of a spontaneous reaction is a nonspontaneous reaction. In a spontaneous reaction, the reaction occurs naturally without any external influence, while in a nonspontaneous reaction, external energy input is required for the reaction to occur.
The synthesis of carbon disulfide is spontaneous and exothermic at room temperature what must be true regarding this reaction?
The reverse reaction is endothermic and nonspontaneous.
The precipitation of potassium chloride is nonspontaneous and exothermic at room temperature what must be true regarding this process?
For the precipitation of potassium chloride to occur at room temperature, energy must be supplied to the system to overcome the nonspontaneous nature of the process. This energy input can come in the form of heat to compensate for the exothermic nature of the reaction. Additionally, the reaction may be driven forward by manipulating the concentration of reactants or by using a catalyst.
The synthesis of decomposition of nitrogen dioxide is endothermic and nonspontaneous at room temperature what must be true regarding this reaction?
For the reaction to occur at room temperature, an external energy source must be provided to drive the reaction, and the reaction will absorb heat from the surroundings. The reaction is non-spontaneous because it does not occur naturally without intervention.
What kind of reaction occurs when the entropy change of an endothermic reaction is negative?
The reaction is exothermic
Is Entrophy change in a system that undergoes a spontaneous process positive negative or zero?
Negative entropy is a process or chemical reaction proceeds spontaneously in the forward direction.Positive entropy is a process proceeds spontaneously in reverse.
What is the voltage for the non spontaneous reaction between silver Ag and copper Cu and their ions?
The standard cell potential for the non-spontaneous reaction between silver and copper ions (Ag+ and Cu2+) is determined by subtracting the reduction potential of Ag+ from that of Cu2+. The cell potential would be negative as the reaction is non-spontaneous, indicating that an external voltage larger than the calculated value would be needed to drive the reaction in the reverse direction.
How can you reverse a redox reaction in a voltaic cell?
if the external circuit is replaced by a source of electricity that opposes the voltaic cell, the electrode reactions can be reversed.Now,the external source pushes the electrons in the opposite direction and supplies energy or work to the cell so that the reverse non-spontaneous reaction occurs.
What is the significance of the Gibbs free energy change (G) in chemical reactions and how does it relate to the spontaneity and equilibrium of a reaction?
The Gibbs free energy change (G) is important in chemical reactions because it indicates whether a reaction is spontaneous or not. If G is negative, the reaction is spontaneous and can proceed without external intervention. If G is positive, the reaction is non-spontaneous and requires external energy input to occur. At equilibrium, G is zero, meaning the forward and reverse reactions are occurring at equal rates.
How If a reaction occurs at 293 K that has a change in enthalpy of plus 125 kJ and a change in entropy of plus 35 J K then is the reaction spontaneous If so why If not why not?
A process will be spontaneous when the change in Gibbs free energy is negative.The change in Gibbs free energy can be calculated from the equation:G2 - G1 = H2 - H1 - T(S2 - S1)whereG is Gibbs free energyH is EnthalpyT is absolute temperature (when T is given in Kelvin or Rankine it is an absolute temperature)S is EntropyIn this caseH2 - H1 = 125 kJT = 293 KS2 - S1 = 35 J/K = 0.035 kJ/Kso doing the math you getG2 - G1 = 125 - 293(0.35) = 22.45 > 0 so the process is not spontaneous in the direction where enthalpy change and entropy change are being measured. The reverse process would be spontaneous.
When ice melts you can tell it is not a a chemical reaction because?
The process will reverse if you lower the temperature again.
What is the name of the reverse reaction of esterification?
The reverse reaction of esterification is called hydrolysis. This process involves breaking down an ester into its original alcohol and carboxylic acid components through the addition of water.
