The enthalpy change that accompanies a reaction in the molar quantities expressed in a chemical equation under standard conditions, all reactants and products being in their standard states
The enthalpy change that takes place when one mole of a substance reacts completely with oxygen under standard conditions, all reactants and products being in their standard states
The enthalpy change that takes place when one mole of a compound is formed from the constituent elements in their standard states under standard conditions
Questão 3
Questão
Which is the Hess cycle for enthalpy change of formation?
If a reaction can take place by more than one route and the initial and final condition are the same, the total enthalpy change is the same for each route
If a reaction takes place by more than one route, the total enthalpy change differs for each route
A reaction cannot take place by more than one route
Questão 6
Questão
What is the standard enthalpy change of combustion?
Responda
The enthalpy change that accompanies a reaction in the molar quantities expressed in a chemical equation under standard conditions, all reactants and products being in their standard states
The enthalpy change that takes place when 1 mole of a substance reacts completely with oxygen under standard conditions, all reactants and products being in their standard states
The enthalpy change that takes place when 1 mole of a compound is formed from its constituent elements in their standard states under standard conditions
Questão 7
Questão
What is the enthalpy change of formation?
Responda
The enthalpy change that accompanies a reaction in the molar quantities expressed in a chemical equation under standard conditions, all reactants and products being in their standard states
The enthalpy change that takes place when 1 mole of a substance reacts completely with oxygen under standard conditions, all reactants and products being in their standard states
The enthalpy change that takes place when 1 mole of a compound is formed from its constituent elements in their standard states under standard conditions
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