Reversible reactions and equilibria
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what happens in reversible reactions
the product molecules can react with each other or decompose & form the reactant molecules again
the reaction happens in what directions
both
forward reaction produces
products
reverse reaction forms
reactants
symbol for reversible reactions
⇌
effect of heat on ammonium chloride
• heating it produces ammonia and hydrogen chloride gases • as the hot gases cool down, they recombine to form the reactant (solid ammonium chloride)
what’s the reversible reaction for ammonium chloride
NH4Cl (s) ⇌ NH3 (g) + HCl (g)
is forwards reaction for ammonium chloride endo or exo thermic
endothermic (decomposition)
is reverse reaction for ammonium chloride endo or exo thermic
exothermic (forming)
hydrated copper sulfate is seen as
blue crystals
hydrated copper sulfate can be ___ to form ___
heated anhydrous copper sulfate
forwards reaction in hydrated copper sulfate is
endothermic as energy is taken in to remove water (make anhydrous copper sulfate)
anhydrous copper sulfate can be seen as
white powder
the reverse reaction for anhydrous copper sulfate is
exothermic as water is added to form hydrated copper sulfate