Kd = Solubility in octaol/ Solublity in water As form the data, we can clearly o

Question

Kd = Solubility in octaol/ Solublity in water

As form the data, we can clearly observe that the solubility of compound X increases on increasing the pH.

Higher pH means the solution is basic.

Now,

Let the base used here is NaOH

     R-COOH       +        NaOH    ----------->    RCOO-Na+    +   H2O
(carboxylic acid)                                                 (salt)

We know that the carboxylic acids are organic compound and are more soluble in organic solvents such as octanol.

RCOO-Na+ is a salt and are soluble in water.

Hence the compound probably has carboxyl functional groups.

EXTRA:

If the solubility of compound X would have increased with decreasing pH. Then the compound X would have been the amine.

Decreasing pH means acidic solution:

R-NH2     +    HCl      ---------------->             R-NH3+Cl-   
(amine)                                                            (salt)

Explanation / Answer

caiahthe te o entUsing water and 1 A research scientist isolates a compound ( octanol, the following distribution coefficients, ph Kd (solubility in octanol/solubility in water Kd octanolXwater) are calculated as a function of pH (with water being the extractant phase) 8 10 12 0.8 8.39 76 75 75 0.008 Which of the following statements is correct? the compound probably has carboxyl functional groups the compound probably has amine functional groups the compound probably has aldehyde functional groups the compound probably has alcohol functional groups

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