test Flashcards
(12 cards)
what are Reversible Reactions
reactions that can proceed in both forwards and backwards directions.
meaning
A + B ⇌ C + D
The reactants (A + B) can combine to give the products (C + D).
The products (C + D) can combine to give the reactants (A + B).
symbol for Reversible Reaction
⇌
Exothermic reactions
endothermic reactions
How does conservation of energy apply to reversible chemical reactions?
Energy is conserved during chemical reactions.
The energy is released/absorbed by the forward reaction will be exactly equal to the energy absorbed/released by the backward reaction.
What happens to energy during chemical reactions?
it is consevered
how can the energy transfers that take place in an exothermic and endothermic reactions be measured
by monitoring the temperature of the surroundings.
what’s an Closed system?
A closed system is a system where reactants and products can neither be added nor removed.
To measure the rate of a reaction, we can either…
…measure how fast the reactants are being used up, or how fast the products are being formed.
what are the equation(s) to calculate the overall rate of a reaction?
Equilibrium definition
when the rate of the forward reaction equals the rate of the backwards reaction