Enthalpy Stoichiometry

A positive ΔH means the reaction is:

• complete

• at equilibrium

• exothermic

• endothermic

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-4

A positive ΔH means that:

• In order for the reaction to happen, heat must be input. It is exothermic

• In order for the reaction to happen, heat must be input. It is endothermic.

• When the reaction happens, heat is released. It is exothermic

• When the reaction happens, heat is released. It is endothermic

Tags

NGSS.HS-PS1-4

Is the following exothermic or endothermic?

• Endothermic

• Exothermic

Tags

NGSS.HS-PS1-4

Tags

NGSS.HS-PS1-4

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

NGSS.HS-PS3-4

The reaction:

A + B → C

ΔH = + 25 kJ

is a(n):

• Exothermic Reaction

• Endothermic Reaction

• Neutralization Reaction

• Spontaneous Reaction

Tags

NGSS.HS-PS1-4

Which of the following statements is true for a reaction with a positive enthalpy change (ΔH)?

• The reaction absorbs heat and is endothermic.

• The reaction releases heat and is exothermic.

• The reaction is at equilibrium.

• The reaction is spontaneous.

Tags

NGSS.HS-PS1-4

In an enthalpy stoichiometry problem, if a reaction has a ΔH of +50 kJ, what does this indicate about the reaction?

• The reaction is exothermic and releases 50 kJ of heat.

• The reaction is endothermic and absorbs 50 kJ of heat.

• The reaction is at equilibrium with no heat change.

• The reaction is spontaneous and releases 50 kJ of heat.

Tags

NGSS.HS-PS1-4