Thermochemistry Spartan 37 & 39

choose the correct METHOD to apply hess's law...

• Algebraic Method

• Theorem Method

• Cycle Energy method

• Energy cycle method

In an exothermic process the surrounding looses heat. 

• True
• False

Do reactants in an endothermic reaction have a higher or lower energy than the products? 

• Higher
• Lower

energy in endothermic reactions are

• released
• ended
• absorbed

For the formula:
 Q= m c ∆T
The  units for specific heat are:

• g /J C
• °C/g J
• kJ/g
• J/g°C

Hess's Law states that when the reactant are converted to the product, the total enthalpy change is ____ whether the reaction takes place in one step or in a series of steps.

q stands for which variable

• heat
• mass
• specific heat
• change in temperature

10. Which label on the diagram accurately identifies the Activation energy for an endothermic reaction? a) A b) B c) C d) D

• C
• D
• A

• B

Standard enthalpy of combustion defined as...

haa pilih kamu..

• heat released when 1 mole of substance is burn completely in excess oxygen

• heat released when 1 mole of substance is burn completely in excess oxygen under standard condition

• heat released when 1 mole of substance is burn incompletely in excess oxygen under standard condition

• heat absorbed when 1 mole of substance is burn completely in excess oxygen under standard condition

Ionisation energy is defined as..

• the minimum energy required to remove 1 mole of electron from 1 mole of gaseous ion to form 1 mole of gaseous atom

• the maximum energy required to remove 1 molr of electron from 1 mole of gaseous atom to form 1 mole of gaseous ion

• the minimum energy required to adding 1 mole of electron from 1 mole of gaseous atom to form 1 mole of gaseous ion

• the minimum energy required to remove 1 mole of electron from 1 mole of gaseous atom to form 1 mole of gaseous ion