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1.575 gm of organic acid was dissolved i...

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

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The correct Answer is:
2
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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Knowledge Check

  • 0.84 g. of an acid of Molecular weight 225 is present in 100ml of the solution. 25ml of this solution required 28ml of N/10 NaOH solution for complete neutralisation. The basicity of the acid is

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