1.

One gram - atom of Ca burnt in excess of oxygen wasdissolved in waterto makeup a litre solution. Calculate the normality alkaline solution .

Answer»

Solution :First Method
`Ca (O_(2))/(" BURNT") CaO (" disolved in water ") to Ca(OH)_(2)`
m.e of Ca = m.e of CaO= m.eof 1000 mL of `Ca(OH)_(2)` solution
` :.` m.e of 1000 mL of `Ca(OH)_(2)`solution = m.e of Ca
` = eq xx 1000`
= (gram - atom ` xx` VALENCY of Ca) `xx` 1000
` = 1 xx 2 xx 1000`
= 2000
` :. `normalityof `Ca(OH)_(2)` solution = `(m.e)/(" vol in mL")`
` (2000)/(1000 ) = 2 N `


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