Answer:
![K = \frac {[Cr_{2}O_{7}^{2-}]}{[CrO_{4}^{2-}]^{2} \cdot [H_{3}O^{+}]^{2}}](https://tex.z-dn.net/?f=%20K%20%3D%20%5Cfrac%20%7B%5BCr_%7B2%7DO_%7B7%7D%5E%7B2-%7D%5D%7D%7B%5BCrO_%7B4%7D%5E%7B2-%7D%5D%5E%7B2%7D%20%5Ccdot%20%5BH_%7B3%7DO%5E%7B%2B%7D%5D%5E%7B2%7D%7D%20)
Explanation:
The equilibrium constant for a given reversible aqueous reaction is defined by the product ratio of the concentrations between the products and reactants:
aA + bB ⇄ cC + dD
![K = \frac {[products]^{p}}{[reactants]^{r}} = \frac {[C]^{c} \cdot [D]^{d}}{[A]^{a} \cdot [B]^{b}}](https://tex.z-dn.net/?f=%20K%20%3D%20%5Cfrac%20%7B%5Bproducts%5D%5E%7Bp%7D%7D%7B%5Breactants%5D%5E%7Br%7D%7D%20%3D%20%5Cfrac%20%7B%5BC%5D%5E%7Bc%7D%20%5Ccdot%20%5BD%5D%5E%7Bd%7D%7D%7B%5BA%5D%5E%7Ba%7D%20%5Ccdot%20%5BB%5D%5E%7Bb%7D%7D%20)
<em>where K: is the equilibrium constant, [C] and [D]: are the product concentrations, [A] and [B]: are the reactant concentrations and a,b,c,d: are the stoichiometric coefficients from the reaction. </em>
Therefore, based on the definition the equilibrium constant of our reaction is:
2CrO₄²⁻(aq) + 2H₃O⁺(aq) ⇄ Cr₂O₇²⁻(aq) + 3H₂O(l)
Generally, the water concentration is omitted from the expressions.
I hope it helps you!
Answer:
I believe it it is c
Explanation:
I dont knkw what els e to add so yea
If a sample of gas is a 0.622-gram, volume of 2.4 L at 287 K and 0.850 atm. Then the molar mass of the gas is 7.18 g/mol
<h3>What is an ideal gas equation?</h3>
The ideal gas law (PV = nRT) relates to the macroscopic properties of ideal gases.
An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).
Given :
The ideal gas equation is given below.
n = PV/RT
n = 86126.25 x 0.0024 / 8.314 x 287
n = 0.622 / molar mass (n = Avogardos number)
Molar mass = 7.18 g
Hence, the molar mass of a 0.622-gram sample of gas having a volume of 2.4 L at 287 K and 0.850 atm is 7.18 g
More about the ideal gas equation link is given below.
brainly.com/question/4147359
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The untrue statement is that they high melting points.
The covalent compounds are the compounds exhibiting strong intra-molecular bonds. This is due to the tightness of the atoms within the covalent molecules. The force of attraction between the individual molecules in a covalent compound seems to be weak. The covalent compounds exhibit weak intermolecular forces that hold the atoms together due to this they have a low melting point.
