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What do you know about a chemical reaction if the value of H(TRIANGLE) is positive?
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True or False A large positive value of entropy tends to favor products of a chemical reaction?
True, a large positive value of entropy tends to favor products of a chemical reaction. However, entropy can be offset by enthalpy; a large positive value of enthalpy tends to favor the reactants of a chemical reaction. The true measure to determine which side of a chemical reaction is favored is the change in Gibbs' free energy, which accounts for both entropy and enthalpy, as calculated by: Change in Gibbs = Change in Enthalpy - Temp in Kelvin * Change in Entropy A negative value of Gibbs free energy will always favour the products of a chemical reaction.
What does it mean if the change in enthalpy value for a chemical reaction is positive?
Change in enthalpy value for a chemical reaction is positive is because,there loose of electron(s) in the reaction, and that will change the enthalpy of that particular element from negetive,neutral to positive.
Which of the following factors does not affect thr equilibrium of a chemical reaction when it is changed?
The value of the equilibrium constant K is only influenced by temperature.
A chemical reaction takes place 100 cm2 a piston is pushed out through 12 cm against an external pressure of 658 torr What is the t is the value for w for this reactionSign does matter in Joule?
I believe the answer to a chemical reaction taking place with 100 cm2 and a piston is pushed out through 12 cm against an external pressure of 658 torr, the value of w is 175.465 joules.
What Activation energy play in a chemical reaction?
Activation energy tells you how much energy chemical reaction needs to start. Example paper wont suddenly start burning, but you need first to put some energy in paper, before that reaction starts.
A chemical reaction has a positive ΔH value and a positive ΔS value Under what conditions is the reaction spontaneous?
The reaction is spontaneous only at high temperatures.
True or False A large positive value of entropy tends to favor products of a chemical reaction?
True, a large positive value of entropy tends to favor products of a chemical reaction. However, entropy can be offset by enthalpy; a large positive value of enthalpy tends to favor the reactants of a chemical reaction. The true measure to determine which side of a chemical reaction is favored is the change in Gibbs' free energy, which accounts for both entropy and enthalpy, as calculated by: Change in Gibbs = Change in Enthalpy - Temp in Kelvin * Change in Entropy A negative value of Gibbs free energy will always favour the products of a chemical reaction.
What does it mean if the change in enthalpy value for a chemical reaction is positive?
Change in enthalpy value for a chemical reaction is positive is because,there loose of electron(s) in the reaction, and that will change the enthalpy of that particular element from negetive,neutral to positive.
A chemical reaction has a positive H value and a positive S value Under what conditions is the reaction spontaneous?
the reaction is always spontaneous :) youre welcome =D i just took this on apex, the correct answer is the reaction is spontaneous only at high temperatures.
Can a chemical reaction change the pH value?
Yes it can.
Which of the following processes would you predict to have a positive value for the reaction?
None of the "following" processes.
How is activation energy relates to the start of chemical reactions?
A chemical reaction begin only if the activation energy has a specific value.
What is heat included in the equation of an endothermic reaction?
The heat in an endothermic reaction is included as a reactant on the left side of the equation, and has a positive value.
What is heat included in equation of an endothermic reaction?
The heat in an endothermic reaction is included as a reactant on the left side of the equation, and has a positive value.
What does the value of the equilibrium constant indicate?
When a chemical reaction reach the equilibrium she can not continue spontaneously.
What is heat of reaction and enthalpy of reaction?
Heat of reaction and enthalpy of reaction are the same thing. Enthalpy, or the heat transfer, cannot be measured, however we can measure the CHANGE of enthalpy which is shown by a value of ∆H. This measured in kilojoules per mole of reactant. (KJ/mol)This value may be positive or negative. For endothermic reactions (which absorb heat), the ∆H value is always positive. For exothermic, where heat is released, the value is negative.
Does chemical potential changes as reaction proceeds?
yes,as gibbs free energy depends on temp. ,its value for a fixed amount of a substance change,so chemical potential changes with reaction.
