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Medical
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The percentage of pyridine (C5H5N) that forms pyridinium ion (C5H5N*H) in a 0.10 M aqueous pyridine solution (Kb for C5H5N = 1.7 x 10-9) is

  • Option 1)

    0.0060%

  • Option 2)

    0.013%

  • Option 3)

    0.77%

  • Option 4)

    1.6%

 

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Medical
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The equilibrium constants of the following are:

\begin{array}{*{20}c} {\text{N}_2 + 3\text{H}_2 \rightleftharpoons 2\text{NH}_3 } & {\text{K}_1 } \\ \end{array}

\begin{array}{*{20}c} {\text{N}_2 + \text{O}_2 \rightleftharpoons 2\text{NO}} & {\text{K}_2 } \\ \end{array}

\begin{array}{*{20}c} {\text{H}_2 + \frac{1} {2}\text{O}_2 \to \text{H}_2 \text{O}} & {\text{K}_3 } \\ \end{array}

The equilibrium constant (K) of the reaction:

2\text{NH}_3 + {\raise0.7ex\hbox{$5$} \!\mathord{\left/ {\vphantom {5 2}}\right.\kern-\nulldelimiterspace} \!\lower0.7ex\hbox{$2$}}\text{O}_2 \mathop \rightleftharpoons \limits^\text{K} 2\text{NO} + 3\text{H}_2 \text{O}

  • Option 1)

    K_1 {{K_3^3 } \mathord{\left/ {\vphantom {{K_3^3 } {K_2 }}} \right. \kern-\nulldelimiterspace} {K_2 }}

  • Option 2)

    K_2 {{K_3^3 } \mathord{\left/ {\vphantom {{K_3^3 } {K_1 }}} \right. \kern-\nulldelimiterspace} {K_1 }}

  • Option 3)

    K_2 {{K_3 } \mathord{\left/ {\vphantom {{K_3 } {K_1 }}} \right. \kern-\nulldelimiterspace} {K_1 }}

  • Option 4)

    K_2^3 {{K_3 } \mathord{\left/ {\vphantom {{K_3 } {K_1 }}} \right. \kern-\nulldelimiterspace} {K_1 }}

 
  Equilibrium constant for the reverse reaction - Equilibrium constant for the reverse reaction is the inverse of the equilibrium constant for the reaction in the forward direction. - wherein    is  equilibrium constant for reverse direction.     ,    - - - - - - - -- (1)   - - - - -- - - - - -(2) - - - - - - - - - - (3) adding (1) (2) (3) Option 1) Incorrect option Option 2) Correct...
Medical
1313 Views   |  

Concentration of the Ag+ ions in a saturated solution of Ag2C2O4 is 2.2 x 10-4 mol L-1. Solubility product of Ag2C2O4 is :

  • Option 1)

    2.42 x 10-8

  • Option 2)

    2.66 x 10-12

  • Option 3)

    4.5 x 10-11

  • Option 4)

    5.3 x 10-12

 
  Solubility product constant - - wherein For a pure solid substance the concentration remain constant                                Option 1) 2.42 x 10-8 This is incorrect option Option 2) 2.66 x 10-12 This is incorrect option Option 3) 4.5 x 10-11 This is incorrect option Option 4) 5.3 x 10-12 This is correct option
Medical
793 Views   |  

A 20 litre container at 400 K contains CO2(g) at pressure 0.4 atm and an excess of SrO (neglect the volume of solid SrO). The volume of the containers is now decreased by moving the movable piston fitted in the container. The maximum volume of the container, when pressure of CO2 attains its maximum value, will be :

(Given that : \text{SrCO}_\text{3} \text{(s)} \rightleftharpoons \text{SrO(s) + CO2(g), K}_\text{p} = 1.6\,\text{atm})

  • Option 1)

    5 litre

  • Option 2)

    10 litre

  • Option 3)

    4 litre

  • Option 4)

    2 litre

 
As we learnt in concept Relation between Kp and Kc - while calculating the value of Kp , pressure should be expressed in bar. - wherein  = (number of moles of gaseous products) - (number of moles gaseous reaction)     For max. Volume of container, let's assume that n=constant, then p=1.6 atm V= Option 1) 5 litre This option is correct  Option 2) 10 litre This option is incorrect  Option 3) 4...
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