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प्रश्न
Ethyl acetate is formed by the reaction between ethanol and acetic acid and the equilibrium is represented as:
\[\ce{CH3COOH (l) + C2H5OH (l) ⇌ CH3COOC2H5 (l) + H2O (l)}\]
Starting with 0.5 mol of ethanol and 1.0 mol of acetic acid and maintaining it at 293 K, 0.214 mol of ethyl acetate is found after sometime. Has equilibrium been reached?
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उत्तर
Let the volume of the reaction mixture be V.
| CH3COOH(l) | + | C2H5OH(l) | ↔ | CH3COOC2H5(l) | + | H2O(l) | |
| Initial conc. | `1.0/"V"`M | `0.5/"V"`M | 0 | 0 | |||
| After some time | `(1.0 - 0.214)/"V"` | `(0.5 - 0.214)/"V"` | `0.214/"V"`M | `0.214/"V"`M | |||
| `= 0.786/"V"`M | `= 0.286/"V"`M |
Therefore, the reaction quotient is,
`"Q"_"C" = (["CH"_3"COOC"_2"H"_5]["H"_2"O"])/(["CH"_3"COOH"]["C"_2"H"_5"OH"])`
`= (0.214/"V" xx 0.214/"V")/(0.786/"V" xx 0.286/"V")`
= 0.2037
= 0.204 (approximatly)
Since `"Q"_"c" < "K"_"c"` equilibrium has not been reached.
संबंधित प्रश्न
Ethyl acetate is formed by the reaction between ethanol and acetic acid and the equilibrium is represented as:
\[\ce{CH3COOH (l) + C2H5OH (l) ⇌ CH3COOC2H5 (l) + H2O (l)}\]
Write the concentration ratio (reaction quotient), Qc, for this reaction (note: water is not in excess and is not a solvent in this reaction).
Ethyl acetate is formed by the reaction between ethanol and acetic acid and the equilibrium is represented as:
\[\ce{CH3COOH (l) + C2H5OH (l) ⇌ CH3COOC2H5 (l) + H2O (l)}\]
At 293 K, if one starts with 1.00 mol of acetic acid and 0.18 mol of ethanol, there is 0.171 mol of ethyl acetate in the final equilibrium mixture. Calculate the equilibrium constant.
Equilibrium constant, Kc for the reaction
\[\ce{N2 (g) + 3H2 (g) ⇌ 2NH3 (g)}\] at 500 K is 0.061.
At a particular time, the analysis shows that composition of the reaction mixture is 3.0 mol L–1 N2, 2.0 mol L–1 H2 and 0.5 mol L–1 NH3. Is the reaction at equilibrium? If not in which direction does the reaction tend to proceed to reach equilibrium?
When hydrochloric acid is added to cobalt nitrate solution at room temperature, the following reaction takes place and the reaction mixture becomes blue. On cooling the mixture it becomes pink. On the basis of this information mark the correct answer.
\[\ce{\underset{(pink)}{[Co(H2O)6]^{3+}} (aq) + 4Cl- (qa) ⇌ \underset{(blue)}{[CoCl4]^{2-}} (aq) + 6H2O (l)}\]
In a reversible reaction, a catalyst:
