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eggyhz1980
26.02.2020 •
Chemistry
At 25°C, K = 0.090 for the following reaction. H2O(g) + Cl2O(g) equilibrium reaction arrow 2 HOCl(g) Calculate the concentrations of all species at equilibrium for each of the following cases. (a) 1.3 g H2O and 2.2 g Cl2O are mixed in a 1.5-L flask.
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Ответ:
Explanation:
1. Chemical reaction:
2. Initial concentrations:
i) 1.3 g H₂O
Number of moles = 1.3g / (18.015g/mol) = 0.07216 molMolarity, M = 0.07216 mol / 1.5 liter = 0.0481 mol/literii) 2.2 g Cl₂O
Number of moles = 2.2 g/ (67.45 g/mol) = 0.0326 molMolarity = 0.0326mol / 1.5 liter = 0.0217 mol/liter3. ICE (Initial, Change, Equilibrium) table
I 0.0481 0.0326 0
C -x -x +x
E 0.0481-x 0.0326-x x
4. Equilibrium expression
5. Solve:
Use the quadatic formula:
The positive result is x = 0.00909
Thus the concentrations are:
[HOCl] = 0.00909 mol/liter [H₂O] = 0.0481 - 0.00909 = 0.03901 mol/liter[Cl₂O] = 0.0326 - 0.00909 = 0.02351 mol/literОтвет:
ok, will do. Hope you hit 3k soon.