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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 is true when two reactants combine in an exothermic reaction?
Exothermic Reactions: The delta h is always NEGATIVE! Energy is released (delta is the little triangle in front of the H)
What does a catalyst do in a chemical reaction?
Reduces the activation energy of the reaction, which speeds up the progress of the reaction It increases the rate of a chemical reaction. However a true catalyst is not consumed in the reaction.
Is it true that in a chemical reaction reactants are changed into products?
no, it is before the reaction
Is it true that an electrons has a negative charge?
Electrons have a negative charge. Protons have a positive charge, and neutrons have a neutral charge. Added: Electrons always have a negative charge, value: minus 1.602*10-19 Coulomb.
What is true of the enthalpy reaction?
Its value does not depend on which reaction are added
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.
Which is true of the enthalpy of a reaction?
Its value does not depend on which reactions are added.
What is true of the enthalpy value of an intermediate reaction?
It is multiplied by 2 if the intermediate reaction is multiplied by 2
A single-displacement reaction is always a redox reaction but a redox reaction isn't always a single-displacement reaction.?
This is true -APEX
A single displacement reaction is always a redox reaction but a redox reaction isnt always a single displacement reaction?
false true
Is a redox reaction always a single-displacement reaction but a single-displacement reaction isn't always a redox reaction?
This is true -APEX
Is is true the difference of two rational numbers is always negative?
No, it is not true.
The absolute value of a number is always non-negative?
true
Is it always true that two negatives make a positive?
Adding two negative numbers will always be negative. Subtracting two negative numbers may be positive or negative. Dividing or multiplying two negative numbers will always be positive.No
True or false the sum of two negative integers is always positive?
yes the answer is always a positive
What is true when two reactants combine in an exothermic reaction?
Exothermic Reactions: The delta h is always NEGATIVE! Energy is released (delta is the little triangle in front of the H)
