1.

If a freshly formed ppt of SnO_2 is peptised by a small amount of NaOH, these colloidal particles may be represented as

Answer»

`[SnO_2]SnO_(3)^(2-) : Na^(+)`
`[SnO_2]SN^(4+) : O^(2-)`
`[SnO_2]Na^(+) : OH^(-)`
`[SnO_2]Sn^(4+) : OH^(-)`

SOLUTION :`SNO_(2) +NAOH rarr underset("SODIUM stannate ")(Na_2SnO_3) "" [SnO_2]SnO_(3)^(2-)`


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