1.

1.575 gm of organic acid was dissolved in 250ml of water 20ml of this solution required 16 ml of N//8 alkali solution for completely neutralization. (M. wt of acid is 126) the basicity of acid is

Answer»


Solution :16ml `(N)/(8)` alkali solution = 20ml of acid solution
2ml 1 N alkali solution = 20ml of acid solution
? = 250 ML of acid solution
`implies` % 25ml IN of alkali solution obtained
25ml 1N of alkali solution .......... 1.575grams of acid
1000ml 1 N alkali solution ........?
`implies (1.575)/(25) xx 1000` GRAMS of acid
`implies` equalant Acid = 63
Molecular WEIGHT of acid = `"equivalent acid" xx "VALANCY"`
`implies` valancy = 2 126 = 63X valancy


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