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Test: Enthalpies for Different Types of Reactions (June 12) - JEE MCQ


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10 Questions MCQ Test Daily Test for JEE Preparation - Test: Enthalpies for Different Types of Reactions (June 12)

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Test: Enthalpies for Different Types of Reactions (June 12) - Question 1

What is the formula for calculating the change in enthalpy (ΔH) of a system during a chemical reaction?

Detailed Solution for Test: Enthalpies for Different Types of Reactions (June 12) - Question 1

The formula for calculating the change in enthalpy (ΔH) during a chemical reaction is ΔH = Hproducts – Hreactants. This equation represents the difference between the enthalpy of the products and the enthalpy of the reactants.

Test: Enthalpies for Different Types of Reactions (June 12) - Question 2

What is the standard condition for calculating the standard enthalpy of formation (ΔHºf) of a compound?

Detailed Solution for Test: Enthalpies for Different Types of Reactions (June 12) - Question 2

The standard condition for calculating the standard enthalpy of formation (ΔHºf) of a compound is 298 K (25°C) and 1 atm pressure.

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Test: Enthalpies for Different Types of Reactions (June 12) - Question 3

Which type of enthalpy change represents the enthalpy change that occurs when one mole of a compound is made from its constituent parts?

Detailed Solution for Test: Enthalpies for Different Types of Reactions (June 12) - Question 3
The enthalpy of formation is the enthalpy change that occurs when one mole of a compound is made from its constituent parts. It is represented by ?Hf.
Test: Enthalpies for Different Types of Reactions (June 12) - Question 4
What is the enthalpy change that occurs when one mole of a substance is dissolved in a specific amount of solvent at a specific temperature called?
Detailed Solution for Test: Enthalpies for Different Types of Reactions (June 12) - Question 4
The enthalpy change that occurs when one mole of a substance is dissolved in a specific amount of solvent at a specific temperature is called the enthalpy of hydration.
Test: Enthalpies for Different Types of Reactions (June 12) - Question 5
What is the enthalpy change that occurs when one mole of a substance is completely burnt in excess air or oxygen called?
Detailed Solution for Test: Enthalpies for Different Types of Reactions (June 12) - Question 5
The enthalpy change that occurs when one mole of a substance is completely burnt in excess air or oxygen is called the enthalpy of combustion.
Test: Enthalpies for Different Types of Reactions (June 12) - Question 6

How can you calculate the standard enthalpy of reaction (ΔHº) from the standard enthalpies of formation of reactants and products?

Detailed Solution for Test: Enthalpies for Different Types of Reactions (June 12) - Question 6

To calculate the standard enthalpy of reaction (?Hº), you subtract the sum of the standard enthalpies of formation of reactants from the sum of the standard enthalpies of formation of products. The formula is ?Hº = ?Hºf (products) – ?Hºf (reactants).

Test: Enthalpies for Different Types of Reactions (June 12) - Question 7
What is the enthalpy change that occurs when one gram equivalent of an acid is neutralized by one gram equivalent of a base in dilute solution called?
Detailed Solution for Test: Enthalpies for Different Types of Reactions (June 12) - Question 7
The enthalpy change that occurs when one gram equivalent of an acid is neutralized by one gram equivalent of a base in dilute solution is called the enthalpy of neutralization.
Test: Enthalpies for Different Types of Reactions (June 12) - Question 8
What is the term for the change in enthalpy that occurs when one mole of an anhydrous salt is combined with the requisite number of moles of water to generate hydrated salt?
Detailed Solution for Test: Enthalpies for Different Types of Reactions (June 12) - Question 8
The change in enthalpy that occurs when one mole of an anhydrous salt is combined with the requisite number of moles of water to generate hydrated salt is called the enthalpy of hydration.
Test: Enthalpies for Different Types of Reactions (June 12) - Question 9
What is the term for the change in enthalpy that occurs when one mole of a solid substance is directly converted into a gaseous state at a temperature below its melting point?
Detailed Solution for Test: Enthalpies for Different Types of Reactions (June 12) - Question 9
The change in enthalpy that occurs when one mole of a solid substance is directly converted into a gaseous state at a temperature below its melting point is called the enthalpy of sublimation.
Test: Enthalpies for Different Types of Reactions (June 12) - Question 10
What is the term for the average amount of energy required to break all bonds of a certain type in one mole of a substance?
Detailed Solution for Test: Enthalpies for Different Types of Reactions (June 12) - Question 10
The average amount of energy required to break all bonds of a certain type in one mole of a substance is called bond enthalpy. It represents the energy released when a bond is formed and the same energy absorbed when the bond is broken.
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