Question

Freshly obtained is added to water containing a little HCl. The solution obtained would be …….due to preferential adsorption of …………..ions.

Answer 1

Answer:

decomposition, cation

Answer 2

The complete question is:

Freshly obtained SnO2, is added to water containing

a little HCI. The sol obtained would be .......... due to

preferential adsorption of ....... ions.

(a) positively charged, H+

(b) negatively charged, Sno3*2-

(c) positively charged, Sn4+

(d) positively charged, Sn2+

The correct option is c, i.e. positively charged, Sn4+.

The reaction is as follows:

SnO2 +4 HCL → SnCl4 +2 H2O

The positive charge comes due to thae Sn4+ ions that are adsorbed on the surface of SnO2 particles.