Home
Class 12
CHEMISTRY
(a) Write the chemical reactions involve...

(a) Write the chemical reactions involved in the exraction of gold using sodium cyanide.

Text Solution

Verified by Experts

(a)` 4m+(8CN^-)+2H_2O+O_2to4[M(CN)_2]+4OH^_ 2[M(CN)_2]+Znto[Z_n(CN)_4]^2-+2Mdownarrow(M=Ag or Au)` (b) `Cu_2S+Fes`
Promotional Banner

Topper's Solved these Questions

  • SUPPLEMENTARY EXAMINIATION QUESTION PAPER JUNE 2017

    SUBHASH PUBLICATION|Exercise PART D|5 Videos

  • SUPPLEMENTARY EXAMINIATION QUESTION PAPER JUNE 2017

    SUBHASH PUBLICATION|Exercise PART E|22 Videos

  • SUPPLEMENTARY EXAMINIATION QUESTION PAPER JUNE 2017

    SUBHASH PUBLICATION|Exercise PART B|8 Videos

  • SUPPLEMENTARY EXAMINATION QUESTION PAPER JUNE 2019

    SUBHASH PUBLICATION|Exercise PART-D|11 Videos

  • SURFACE CHEMISTRY

    SUBHASH PUBLICATION|Exercise Questions|79 Videos

Similar Questions

Explore conceptually related problems

Write the chemical reactions involved in the extraction gold using sodium cyanide.

A chemical reaction involves in

Write the chemical reactions involved in the conversion of aniline into phenol.

(a) Explain how is Hinberg's reagent is used to distinguish the primary, secondary and tertiary amines. (b) Write the chemical reactions involved in the conversion of aniline into phenol.

Write the chemical reaction to explain kolbe's reaction.

Write the chemical equation involved in the following reaction White washing

X' is a compound used in cough syrups and in many tonics. It is soluble in H2O i) Name the compound X. Write its chemical forumula. ii) Which gas is evolved when compound X reacts with Sodium? How will you test the chemical equation involved in the reaction of X with sodium. iii) Complete the following equation for X and identify Y. X overset("heat")(rarr)Y .

Write the chemical formula of bleaching powder. Write balanced chemical equation involved in the preparation of bleaching powder and write in three uses.

Give the chemical equation involved in the preparation of sodium carbonate by Solvay process.

Write the equations for the reactions involved in the leaching of alumina from bauxite ore.