To construct the galvanic cell illustrated above, the salt bridge was prepared by soaking a piece of cotton in 5.0MNaNO3(aq) bef
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Answer:
The concentration of the Cu²⁺ solution in the 10,0 mL volumetric flask is 5,425×10⁻³ M Cu²⁺
Explanation:
The first dilution from a 2,17M Cu²⁺ solution gives:
2,17 M Cu²⁺ × = <em>0,0217 M Cu²⁺solution</em>
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The second dilution gives as concentration:
0,0217 M Cu²⁺ × = 5,425×10⁻³ M Cu²⁺ solution
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Answer:
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
<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.
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