06 d block elements || Preparation of K2Cr2O7 || Vikram HAP Chemistry

preparation of K2Cr2O7 and related structure

(a) Indicate the steps in the preparation of K_2Cr_2O_7 from chromite ore. (b) Complete the reaction: K_2Cr_2O_7 overset(Delta)(to)

K2Cr2O7 || KMnO4 || AgNO3

Indicate the steps in the preparation of: (i). K_2Cr_2O_7 from chromite ore. (ii). KMnO_4 from pyrolusite ore

Reaction of aniline with K_2Cr_2O_7 gives

A half cell is prepared by K_(2)Cr_(2)O_(7) in a buffer solution of pH =1 . Concentration of K_(2)Cr_(2)O_(7) is 1M . To 3 litre of this solution 570 gm of SnCI_(2) is added which is oxidised completely to SnCI_(4) . Given: E_(Cr_(2)O_(7)^(-2)//Cr^(+3).H^(+))^(@) = 1.33V, (2.303)/(F) RT = 0.06 , Atomic of mass Sn = 119, E_(Sn^(+4)//Sn^(+2))^(@) = 0.15 Half cell potential E_(Cr_(2)O_(7)^(-2)//Cr^(+3))^(@) after teh reaction of SnCI_(2) is:

In a reaction, Cr_(2)O_(7)^(2-) is reduced to Cr^(3+) . What is concentration of 0.1M K_(2)Cr_(2)O_(7) in equivalent per litre? Cr_(2)O_(7)^(2-)+14H^(+)+6erarr2Cr^(3+)+7H_(2)O

A half cell is prepared by K_(2)Cr_(2)O_(7) in a buffer solution of pH =1 . Concentration of K_(2)Cr_(2)O_(7) is 1M . To 3 litre of this solution 570 gm of SnCI_(2) is added which is oxidised completely to SnCI_(4) . Given: E_(Cr_(2)O_(7)^(-2)//Cr^(+3).H^(+))^(@) = 1.33V, (2.303)/(F) RT = 0.06 , Atomic of mass Sn = 119, E_(Sn^(+4)//Sn^(+2))^(@) = 0.15 Number of moles of Cr^(+3) formed are

A half cell is prepared by K_(2)Cr_(2)O_(7) in a buffer solutoin of pH = 1. Concentration of K_(2)Cr_(2)O_(7) is 1 M. To 3 litre of this solution 570 gm of SnCl_(2) is added which is oxidised completely to SnCl_(4) Given : E_(Cr_(2)O_(7)^(-2)//Cr^(+3),H^(+))^(@)=1.33V,(2.303)/(F)RT=0.06 , Atomic of mass Sn=119 , E_(Sn^(+4)//Sn^(+2))^(@)=0.15 Number of moles of Cr^(+3) formed are

Potassium dichromate K2Cr2O7|| Preparation from Chromite Ore FeCr2O4||Properties OF K2Cr2O7||Rules for Chromate and dichromate with Important Tricks||Test OF K2Cr2O7||Chromyl Chloride Test||H2O2 Test||Drunken Driver Test