Chemistry, 30.03.2020 23:54 dannaasc5475

1 Potassium chlorate decomposes to product potassium chloride and oxygen gas. 2KClO3(s) ⇔ 2KCl(s) + 3O2(g) When this reaction was run at room temperature, the following equilbrium concentrations were measured: [O2] = 0.0500 M; [KCl] = 0.00250 M; [KClO3] = 2.00 M What is the equilibrium constant for this reaction?

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Answer from: lanaiheart7

The equilibrium constant for this reaction is $1.95\times 10^{-10}$

Explanation:

Equilibrium constant is the ratio of the concentration of products to the concentration of reactants each term raised to its stochiometric coefficients.

The given balanced equilibrium reaction is,

$2KClO_3(s)\rightleftharpoons 2KCl(s)+3O_2(g)$

At eqm. conc. (2.00) M ( 0.00250 ) M (0.0500) M

The expression for equilibrium constant for this reaction will be,

$K_c=\frac{[KCl]^2\times [O_2]^3}{[KClO_3]^2}$

Now put all the given values in this expression, we get :

$K_c=\frac{(0.00250)^2\times (0.0500)^3}{(2.00)^2}$

By solving we get :

$K_c=1.95\times 10^{-10}$

Thus the equilibrium constant for this reaction is $1.95\times 10^{-10}$

Answer from: Quest

adding or remove a gaseous reactant or product changes the concentrations. if the concentration of reactant or product is increased, the system will shift away from the side in which concentration was increased (i.e. if the concentration of reactants is increased, the system will shift toward the products. if more products are added, the system will shift to form more reactants). conversely, if the concentration of reactant or product is decreased, the system will shift toward the side in which concentration was decreased (i.e. if reactants are removed, the system will shift to form more reactants. if the concentration of products is decreased, the equilibrium will shift toward the products).

explanation:

Answer from: Quest

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

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1 Potassium chlorate decomposes to product potassium chloride and oxygen gas. 2KClO3(s) ⇔ 2KCl(s) +...