Why is it necessary to add concentrated HCl, then water, rather than a solution of HCl to the eudiometer tube
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The degree of dissociation gives the amount of the substance that dissociated into the products. The value of Kc for water is 1.28 x 10⁻³.
<h3>What is equilibrium constant, Kc?</h3>The equilibrium constant, Kc is the equilibrium concentration of the products over the reactants that are raised by the powers of their stoichiometry coefficient.
The reaction is shown as:
H₂O(l) ⇋ H₂O(g)
Kp = pressure of water = 0.03131579 atm
Here Δ n = 1
Solving further,
Kp = Kc(RT)
0.03131579 = Kc(0.0821 × 298.15)
Kc =1.28 x 10⁻³
Therefore, Kc is 1.28 x 10⁻³.
Learn more about the equilibrium constant here:
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