Enthalpy

Front

What is the amount of energy required to raise the temperature of 1 gram of any substance by 1°C?

Back

Specific heat

Front

In the reaction C + O₂ → CO₂ + 60kJ, what is the value for ΔH?

Back

-60 kJ

Front

What is the SI unit of heat and energy?

Back

Joule

Front

Is the ΔH value in an endothermic reaction a positive number?

Back

True

Front

What type of reaction is represented by a negative ΔH value?

Back

Exothermic reaction

Front

What is the definition of enthalpy?

Back

Enthalpy is a measure of the total heat content of a system.

Front

What does a positive ΔH indicate about a reaction?

Back

The reaction is endothermic.

Front

What does a negative ΔH indicate about a reaction?

Back

The reaction is exothermic.

Front

What is the relationship between enthalpy and heat in a chemical reaction?

Back

Enthalpy change (ΔH) is the heat absorbed or released at constant pressure.

Front

What is the formula for calculating enthalpy change?

Back

ΔH = H(products) - H(reactants)