Home
Class 12
CHEMISTRY
SnO2 forms a positively charged colloida...

`SnO_2` forms a positively charged colloidal sol in the acidic medium and negatively charged sol in the basic medium. Explain.

Text Solution

Verified by Experts

`SnO_(2)` is amphoteric reacting with acid and base both. In acidic medium (say HCl) `Sn^(4+)` ion is formed which is preferentially adsorbed on `SnO_(2)` giving positively charged colloidal sol :
`SnO_(2) + 4HCl to SnCl_(4) + 2H_(2)O ,`
`SnO_(2) + SnCl_(4) to [SnO_(2)]Sn^(4+)` (Positively charged) `+ 4Cl^(-)`.
Promotional Banner

Topper's Solved these Questions

  • SURFACE CHEMISTRY

    RESONANCE ENGLISH|Exercise Solved Problems|11 Videos

  • SURFACE CHEMISTRY

    RESONANCE ENGLISH|Exercise Exercise-1, Part-I, Section (A)|11 Videos

  • SURFACE CHEMISTRY

    RESONANCE ENGLISH|Exercise Section - 5|1 Videos

  • STRUCTURAL IDENTIFICATION

    RESONANCE ENGLISH|Exercise Advanced level Problems (Part-III)|12 Videos

  • TEST PAPERS

    RESONANCE ENGLISH|Exercise FST-3|30 Videos

Similar Questions

Explore conceptually related problems

Give one example of positively charged sol and one example of negatively charged sol.

Which of the following is/are negatively charged sol?

Ferric chloride forms both positively and negatively charged sols. Explain.

Mixing of positively charged colloidal solution with negatively charged colloidal solution brings __________. The decreasing order of coagulating power of Na^(+), Ba^(2+) and Al^(3+) for negatively charged colloidal solution is ________ .

Name the positively charged proteins around which the negatively charged DNA is wrapped.

which of the following sol is negatively charged ?

Why dehydration of alcohol takes place in acidic medium generally but not in basic medium

Which of the following is positively charged colloidal particle ?

Is haemoglobin negatively or positively charged sol?