+91-87964 74404
FlagBACK
Question icon
Grade 12th passInorganic Chemistry

. From the acidic solution containing copper (+2) and zinc (+2) ions, copper can be selectively precipitated using sodium sulphide.

Profile image of Amanat
12 Years agoGrade 12th pass
Answers icon

1 Answer

Profile image of Kevin Nash
12 Years ago
True : K base sp of CuS is less than K base sp of ZnS. On passing H base 2S in acidic medium, the dissociation of H base 2S is suppressed due to common ion effect and it provides [S^2-] which is just suffi-cient to cross over K base sp of CuS and not K base sp fo ZnS. Thus only CuS gets precipitated.

Other Related Questions on inorganic chemistry

question mark
Total number of structural isomers of 
[Co(NH3)6][Cr(CN)6]
inorganic chemistry
1 Answer Available

Last Activity: 3 Years ago

question mark
Why is boiling point of Cesium higher than that of Rubidium
 
inorganic chemistry
1 Answer Available

Last Activity: 4 Years ago

question mark
which isomer mentioned in (a) is water soluble and why?
inorganic chemistry
1 Answer Available

Last Activity: 4 Years ago

question mark
A gaseous mixture contains CO2 and CO the mass of the mixture is 200g and they are presenting equal fraction of moles . Find the total no. of O-atoms present in the mixture.
inorganic chemistry
1 Answer Available

Last Activity: 4 Years ago

question mark

a gaseous mixture contains O2 , N2 and He in equal fraction of moles . Find the mass of He if 28g of N is present and 32g of O is present.

inorganic chemistry
1 Answer Available

Last Activity: 4 Years ago