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Which statement describes characteristics of an endothermic reaction?
decreasing the activation energy
Activated complex
This change exposes more reactant particles to a possible collision
NH4Cl(s) --> NH4+(aq) + Cl-(aq)
-787 kJ
The sign of H is positive, and the products have more potential energy than the reactants.
LiBr
heat content of the products minus the heat content of the reactants
The heat of reaction (delta H) is equal to the
decreasing the activation energy
Activated complex
This change exposes more reactant particles to a possible collision
NH4Cl(s) --> NH4+(aq) + Cl-(aq)
-787 kJ
The sign of H is positive, and the products have more potential energy than the reactants.
LiBr
heat content of the products minus the heat content of the reactants
According to Table I, what is the value of delta H if 2 moles of C(s) are added to oxygen (O2) to produce carbon dioxide (CO2)
decreasing the activation energy
Activated complex
This change exposes more reactant particles to a possible collision
NH4Cl(s) --> NH4+(aq) + Cl-(aq)
-787 kJ
The sign of H is positive, and the products have more potential energy than the reactants.
LiBr
heat content of the products minus the heat content of the reactants
What is the very top of the curve on a potential energy diagram known as.
decreasing the activation energy
Activated complex
This change exposes more reactant particles to a possible collision
NH4Cl(s) --> NH4+(aq) + Cl-(aq)
-787 kJ
The sign of H is positive, and the products have more potential energy than the reactants.
LiBr
heat content of the products minus the heat content of the reactants
Which statement explains why the speed of some chemical reactions is increased when the surface area of the reactant is increased?
decreasing the activation energy
Activated complex
This change exposes more reactant particles to a possible collision
NH4Cl(s) --> NH4+(aq) + Cl-(aq)
-787 kJ
The sign of H is positive, and the products have more potential energy than the reactants.
LiBr
heat content of the products minus the heat content of the reactants
According to Table I, which salt releases energy as it dissolves?
decreasing the activation energy
Activated complex
This change exposes more reactant particles to a possible collision
NH4Cl(s) --> NH4+(aq) + Cl-(aq)
-787 kJ
The sign of H is positive, and the products have more potential energy than the reactants.
LiBr
heat content of the products minus the heat content of the reactants
A catalyst can increase the rate of a reaction by
decreasing the activation energy
Activated complex
This change exposes more reactant particles to a possible collision
NH4Cl(s) --> NH4+(aq) + Cl-(aq)
-787 kJ
The sign of H is positive, and the products have more potential energy than the reactants.
LiBr
heat content of the products minus the heat content of the reactants
Based on Table I, which reaction is endothermic?
decreasing the activation energy
Activated complex
This change exposes more reactant particles to a possible collision
NH4Cl(s) --> NH4+(aq) + Cl-(aq)
-787 kJ
The sign of H is positive, and the products have more potential energy than the reactants.
LiBr
heat content of the products minus the heat content of the reactants
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