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The Gibbs free energy change (ΔG) for a reaction is always positive when the reaction is non-spontaneous under the given conditions. This typically occurs at high temperatures for endothermic reactions (where ΔH is positive and ΔS is negative), or when both ΔH is positive and the entropy change (ΔS) is negative. In these cases, the term TΔS is either small or negative, resulting in ΔG being greater than zero.
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Is G for a reaction always positive?
No, the Gibbs free energy change (ΔG) for a reaction is not always positive. A negative ΔG indicates that a reaction is spontaneous and can proceed in the forward direction, while a positive ΔG means the reaction is non-spontaneous under standard conditions. When ΔG is zero, the system is at equilibrium, and no net change occurs. Thus, ΔG can be positive, negative, or zero, depending on the reaction conditions.
When Under what conditions is G for a reaction always positive apex?
The Gibbs free energy change (ΔG) for a reaction is always positive when the reaction is non-spontaneous under the given conditions. This typically occurs at high temperatures for exothermic reactions (where ΔH is negative and ΔS is positive) or when the entropy change (ΔS) is negative while ΔH is positive. In such cases, the term TΔS is not large enough to overcome the positive ΔH, resulting in a positive ΔG.
What is present after a chemical reaction?
That depends on the chemicals present before the chemical reaction and sometimes the conditions under which the chemical reaction occurred.
What is a substance that enables a chemical reaction to proceed under different conditions?
A catalyst is a substance that enables a chemical reaction to proceed under different conditions. It lowers the activation energy required for the reaction to occur, allowing it to happen more quickly or at a lower temperature or pressure. The catalyst itself remains unchanged in the reaction and can be reused multiple times.
Under what condition is delta G for a reaction always positive?
Delta G (Gibbs free energy change) for a reaction is always positive when the reaction is non-spontaneous under the given conditions. This typically occurs when the system is at equilibrium or when the enthalpy change (ΔH) is positive and the entropy change (ΔS) is negative, leading to a situation where the temperature multiplied by ΔS (TΔS) is not sufficient to drive the reaction forward. Additionally, when the reactants are more stable than the products, or when the reaction requires external energy input to proceed, delta G will also be positive.
Under what conditions is G for a reaction always positive?
When H is positive and S is negative
Is G for a reaction always positive?
No, the Gibbs free energy change (ΔG) for a reaction is not always positive. A negative ΔG indicates that a reaction is spontaneous and can proceed in the forward direction, while a positive ΔG means the reaction is non-spontaneous under standard conditions. When ΔG is zero, the system is at equilibrium, and no net change occurs. Thus, ΔG can be positive, negative, or zero, depending on the reaction conditions.
What is always a direct product of the hydrolysis of an ester regardless of whether the reaction is performed under acidic or basic conditions?
The direct product of the hydrolysis of an ester, under both acidic and basic conditions, is an alcohol and a carboxylic acid.
What is the reaction of argon?
Argon is chemically inert and does not have any reaction under normal conditions.
When Under what conditions is G for a reaction always positive apex?
The Gibbs free energy change (ΔG) for a reaction is always positive when the reaction is non-spontaneous under the given conditions. This typically occurs at high temperatures for exothermic reactions (where ΔH is negative and ΔS is positive) or when the entropy change (ΔS) is negative while ΔH is positive. In such cases, the term TΔS is not large enough to overcome the positive ΔH, resulting in a positive ΔG.
What is present after a chemical reaction?
That depends on the chemicals present before the chemical reaction and sometimes the conditions under which the chemical reaction occurred.
A substance that enables a chemical reaction to proceed under different conditions?
catalyst.
Is alcohol react SN1 or SN2?
The reaction of alcohol depends on the conditions. Under acidic conditions, alcohols can undergo SN1 or E1 reactions. Under basic conditions, alcohols typically undergo SN2 or E2 reactions. The mechanism chosen depends on factors such as the nature of the alcohol, the reagents present, and the reaction conditions.
What is the enthalpy of reaction-?
the heat released or absorbed in a reaction
What are the conditions under which a reversible goes to completion?
1. The rate of forward reaction = to the rate of backward reaction. 2. Concentration of the substance are constant.
What is a substance that enables a chemical reaction to proceed under different conditions?
A catalyst is a substance that enables a chemical reaction to proceed under different conditions. It lowers the activation energy required for the reaction to occur, allowing it to happen more quickly or at a lower temperature or pressure. The catalyst itself remains unchanged in the reaction and can be reused multiple times.
Under what condition is delta G for a reaction always positive?
Delta G (Gibbs free energy change) for a reaction is always positive when the reaction is non-spontaneous under the given conditions. This typically occurs when the system is at equilibrium or when the enthalpy change (ΔH) is positive and the entropy change (ΔS) is negative, leading to a situation where the temperature multiplied by ΔS (TΔS) is not sufficient to drive the reaction forward. Additionally, when the reactants are more stable than the products, or when the reaction requires external energy input to proceed, delta G will also be positive.
