Standard enthalpy changes 2.3.3.and 2.3.4. as unit 2 ocr
define standard conditions and the types of enthalpy changes
- Created by: Broken Rose
- Created on: 19-03-12 21:24
Other questions in this quiz
2. Complete this sentence. In the enthalpy profile diagrams - The activation energy is always the....
- input of energy from the products to the top of the energy barrier
- output of energy from the products to the top of the energy barrier
- input of energy from the reactants to the top of the energy barrier
- output of energy from the reactants to the top of the energy barrier
3. What is a standard condition?
- Neither
- It is a 1 atm, 25 C and 1 mol dm-3 for aqueous liquids
- Both of the above
- It is a 100 kPa, 298 K and 1 mol dm-3 for aqueous liquids
4. what is the standard state?
- it is the physical state of the element in standard condition (above)
- Gaseous state of the element in standard conditions (above)
- Liquid state of the element in standard conditions (above)
5. What is the definition of enthalpy change of reaction?
- is the enthalpy change that accompanies the reaction in the molar quantities expressed in a chemical equation
- is the enthalpy change that accompanies the reaction in the molar quantities expressed in a chemical equation under standard condition, all reactants and products being in their gaseous states.
- is the enthalpy change that accompanies the reaction in the molar quantities expressed in a chemical equation under standard condition, all reactants and products being in their standard states.
- is the enthalpy change that accompanies the reaction in the molar quantities expressed in a electrical equation
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