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On mixing 1 mole of ethyl alcohol with 1 mole of acetic acid at 298 K the equilibrium concentration of ester and water becomes - moles each. If 23 moles of alcohol is mixed with 1 mole of acid, the concentration of ester in moles at equilibrium will be

A. 0.09

B. 0.90

C. 1.1

D. 2.2

Correct Answer :

B. 0.90


Related Questions

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4

Equilibrium constant changes with

A. time

B. temperature

C. pressure

D. both temperature and concentration

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4

0.894 moles of NH3 is enclosed in a 5-litre container and heated to 620 K. If value of the equilibrium constant for the reaction 2NH3N2+3H2 is 0.0395 at 629 K then concentration of NH3 at equilibrium will be

A. 0.037

B. 1.37

C. 0.140

D. 5.337

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4

 At 2000 K the reaction Cs+CO2g2COg is at equilibrium. If the molar concentration of both CO and CO2 at 2000 K at equilibrium is 8 moles lit-1 and 2 moles lit-1 respectively then equilibrium constant for the reaction will be

A. 32

B. 12.8

C. 48

D. 16

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4

If equilibrium constant for the reaction N2+3H22NH3 at 298K is 2.54, the value of equilibrium constant for the reaction will be d12N2+32H2NH3

A. 0.395

B. 5.08

C. 3.18

D. 1.59

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4

Equilibria are those in which the reactants and products are present in more than phases:

A. Physical

B. Heterogeneous

C. Chemical

D. Homogeneous

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4

For the reaction H2g+I2g2HI (g) at 721 K
value of equilibrium constant is 50, when molar concentration of both hydrogen and iodine is 0.5 M at equilibrium value of Kp under the same conditions will be

A. 0.05

B. 50

C. 0.1

D. 25 RT

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4

For the reaction 2HIH2+I2 at 720 K the equilibrium constant value is 50. The equilibrium constant for the reaction H2+I2at the same temperature will be

A. 20

B. 0.56

C. 30

D. 0.02

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4

Reaction between silver nitrate and sodium chloride goes to completion because

A. the reaction is instantaneous

B. silver nitrate is insoluble in water

C. silver chloride is sparingly soluble in water

D. solubility of silver nitrate increases with sodium chloride

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4

The chemical system in equilibrium is not affected by

A. change in the concentration of products

B. increase in the concentration of reac-tants

C. addition of a catalyst

D. changing the temperature

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4

A chemical reaction PQ is said to be in equilibrium when

A. Rate of conversion of P to Q is the same as that of Q to P

B. P and Q are present in equimolar ratio

C. P has completely changed to Q

D. 35% of P is changed to Q

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4

 According to the following reactions, which oxide of nitrogen is the most stable at 298 K

A. 2N2 O5g2H2g+5O2g          K=1.2×1070     

B. 2N2 Og2N2g+O2g        K=3.5×1053

C. 2NO2gN2g+2O2g        K=6.7×1016

D. 2NOgN2g+O2g      K=1.2×1030

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4

For the reaction H2+I22HI the equilibrium constant (K) is

A. HI2H22I2

B. HIH2I2

C. H2I2H+I2

D. HI2H2I2

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4

On mixing 1 mole of ethyl alcohol with 1 mole of acetic acid at 298 K the equilibrium concentration of ester and water becomes - moles each. If 23 moles of alcohol is mixed with 1 mole of acid, the concentration of ester in moles at equilibrium will be

A. 0.09

B. 0.90

C. 1.1

D. 2.2

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4

The equilibrium constant KH2SgH2g+12S2g at 1400 K is 23.90. The equilibrium constant for the reaction 2H2S2H2g+S2g at 1400 K will be

A. 571.20

B. 47.80

C. 371.20

D. 59.543

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4

Equilibrium constant for the reaction PCL5PCL3+CL2 is 0.0205 at 230°C and 1 atmospheric pressure if at equilibrium concentration of PCL5is 0.235 moles liter-1and that of CL2= 0.028 moleslit-1 then conc. of PCL3 at equilibrium is

A. 0.0174

B. 0.174

C. 0.0348

D. 1.74

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4

At equilibrium the concentration of H2,I2 and HI in a reaction chamber kept at 773 K is H2= 0.42 mole liter-1,I2 = 0.042 mole liter-1;HI = 3.52 moles liter-1. The value of the equilibrium constant for the reaction H2+I22HI is

A. 0.712

B. 0.75

C. 71.5

D. 31.5

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4

The equilibrium constant for the reaction at 523 K PCL5gPCL3g+CL2g is
0.04. If value of R = 8.314 JK-1 then G° for the reaction will be

A. 0.13

B. 5

C. +13.9 kj

D. -13.9 kj

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4

0.5 moles of H2 and 0.5 moles of I2 are introduced in the reaction chamber of capacity 10 litre at 271 K. H2 and I2 react to give HI and Kpis found to be 50. If total pressure in the reaction chamber is 5.9 atmosphere then partial pressure of hydrogen will be

A. 0.325 atm

B. 3.2 atm

C. 4.6 atm

D. 0.65 atm

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4

The reaction H2+I22HI is at equilibrium at 298 K 1 mole of N2gas is introduced in the reaction chamber at constant temperature and constant volume. At this:

A. state of equilibrium will remain unaffected

B. more of HI will be obtained

C. equilibrium constant will change

D. more of HI dissociate

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4

Once the equilibrium is reached under given condition:

A. Cone, remains the same in spite of the change in temperature

B. Cone, of all the substances presents do not change

C. Cone, of reactants remairfs same

D. Cone, of products remains same

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4

Which of the following is correct ?

A. Kp=KcRTn

B. Kp.Kc=RT

C. Kp=Kc.RT

D. Kp=Kc.nRT

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4

PCL5is kept in a closed container at a temperature of 250 K the equilibrium concentration of the different substances is PCL5=0.045 moles liter-1 PCL3=CL2=0.096 moles liter-1 The value of equilibrium constant for the reaction PCL5PCL3+CL2 will be

A. 50

B. 50.4

C. 0.0205

D. 0.205