ICSE Class 10 Chemistry 2018 Solved Paper

State one relevant observation for each of the following :

Question : 20 of 80

Marks: +1, -0

Lead nitrate solution is treated with sodium hydroxide solution drop wise till it is in excess.

Solution:

A chalky white ppt of lead hydroxide

[ {\Pb}( {\OH})_2]

is obtained which dissolves in excess

{\NaOH}

forming a clear colourless solution of sodium plumbate

[ {\Na}_2 {\PbO}_2]

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