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If the sign of H is and the sign of S is then the magnitude of T S must be than the magnitude of dH for the reaction to be spontaneous The Gibbs free energy equation is G?
If the sign of ΔH is _______ and the sign of ΔS is _______ , then the magnitude of TΔS must be ________ than the magnitude of ΔH for the reaction to be spontaneous. The Gibbs free energy equation is ΔG = ΔH - TΔS. negative; negative; less
What must be the sign of the standard cell potential (cell) for a redox reaction to be spontaneous?
For a redox reaction to be spontaneous, the standard cell potential (cell) must be positive.
A chemical reaction has a positive H value and a positive S value Under what conditions is the reaction spontaneous?
The spontaneity of a reaction is determined by the sign of the Gibbs free energy (ΔG). If both enthalpy (H) and entropy (S) are positive, the reaction can be spontaneous at high temperatures where the TΔS term outweighs the positive ΔH term, resulting in a negative ΔG. This means the reaction will be spontaneous at elevated temperatures.
What is the enthalpy change for the reverse reaction?
The enthalpy change for the reverse reaction is equal in magnitude but opposite in sign to the enthalpy change for the forward reaction.
Which of these processes have the same magnitude of energy change but are opposite in sign?
Endothermic and exothermic reactions have the same magnitude of energy change but are opposite in sign. In an endothermic reaction, energy is absorbed from the surroundings, while in an exothermic reaction, energy is released to the surroundings.
What is -33 sign and magnitude?
Sign . . . negative Magnitude . . . 33
How is an oxidation half-reaction written using the reduction potential chart?
Reversing the equation gives the oxidation half reaction. Doing this changes the sign on the voltage, not the magnitude.
What is the name and symbol of the single thermodynamic quantity which determines whether or not a reaction is spontaneous?
The name of the single thermodynamic quantity is Gibbs free energy (G). The symbol for Gibbs free energy is ΔG (delta G). The sign of ΔG determines whether a reaction is spontaneous (negative ΔG) or non-spontaneous (positive ΔG).
If dissolving calcium chloride in water is spontaneous what is the sign?
Dissolving calcium chloride in water is not so spontaneous.
What is the relationship between the unit of Gibbs free energy and the spontaneity of a chemical reaction?
The unit of Gibbs free energy, which is joules (J), is used to measure the amount of energy available to do work in a chemical reaction. The spontaneity of a chemical reaction is determined by the sign of the Gibbs free energy change (G). If G is negative, the reaction is spontaneous and can occur without external intervention. If G is positive, the reaction is non-spontaneous and requires external energy input to proceed.
Is a symbol which stands for the value equal to the entirely enthalpy minus the temperature times enthropy . It can be used to determine if a reaction will take place?
The change in Gibbs Free Energy (∆Gº) predicts if a reaction is spontaneous or not. The equation for this is ∆G = ∆H - T∆S where ∆H is the change in enthalpy, T is temperature in Kelvin, and ∆S in change in entropy.
If you need to reverse the following reaction and multiply it by 2 in order for it to be an intermediate reaction in a Hess's law problem what would be the final value for the enthalpy of reaction you?
If you need to reverse a reaction and multiply it by 2 in Hess's law, the enthalpy change of the reaction will also change sign and double in magnitude. This is because reversing a reaction changes the sign of the enthalpy change. Multiplying the reaction by a factor also multiplies the enthalpy change by that factor. Therefore, the final value for the enthalpy of the reaction will be twice the original magnitude but with the opposite sign.
