Chemistry, asked by arpitapritadarsinin, 1 year ago

sno2 forms a positive charge colloidal solution in acidic medium and negatively charged in basic medium

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Answered by doctordevil21

Answer:

thats true bro so whats the question actually........?

Answered by Baldeepkamboj

Answer:

Explanation: SnO2 is amphoteric in nature. It reacts with acid, eg. HCL to form SnCl4 in the solution. The common Sn4 + ions are adsorbed on the surface of SnO2 particles giving the positive charge.

SnO2 reacts with a base, eg., NaOH to form sodium stannate in the solution. The Stannate ions are adsorbed on the surface of SnO2 particles giving them the negative charge.

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