Consider this equilibrium: I2(s) + H2O(l) ⇌ H+(aq) + I-(aq) + HOI(aq). What is the Keq expression for this equilibrium?
The expression is
We often consider a generic reaction of the form
aA +bB ⇌ cC +dD
The equilibrium constant expression for this reaction is
Notice that it is always "products" over "reactants". Each component A, B, C, and D is raised to the power of its coefficient a, b, c, and d in the balanced equation. The concentration of a solid or of a liquid does not change during a reaction. We omit it from the equilibrium constant expression. Consider the equation I₂(s) + H₂O(l) ⇌ H⁺(aq) + I⁻(aq) + HOI(aq) I₂ is a solid, and H₂O is a liquid. Their concentrations do not change during the reaction. We omit them from the All the products are in solution. They can change their concentrations. We keep them in the Thus, the
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[ K_{eq} = \frac{[H^+][I^-][HOI]}{[I_2][H_2O]} ]
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
- Given that #K_"sp"=1.3xx10^(-12)# for #"cuprous iodide"#, #CuI#, what mass of this salt would dissolve in a #1.2*L# volume of water?
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- A solution is a mixture of #"0.05M NaCl"# and #"0.05M NaI"#.The concentration of iodide ion in the solution when #"AgCl"# just starts precipitating is equal to?
- Based on Le Chatelier's principle, what is the predicted effect on solubility of CaCl when a saturated solution?
- What is salt hydrolysis?

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