✍ Scribed by S. C. Tripathi
No coin nor oath required. For personal study only.
The increase in hydrogen ion concentration of monosodium o‐cresotate solution by the progressive addition of beryllium sulphate indicated the possibility of the formation of a complex and also the displacement of hydroxyl hydrogen of monosodium o‐cresotate. In the mixtures of beryllium sulphate and monosodium o‐cresotate mixed in 1:2 or more mole ratios, two colourless complexes are formed, one at about pH 5‐‐25 containing beryllium and o‐cresotate in 1:1 ratio and the other above pH 8.5 containing beryllium and o‐cresotate in 1:2 ratio.
The specific conductivity curves obtained by the conductometric titrations of 1:1, 1:2 and 1:3, mole ratio mixtures of beryllium sulphate and monosodium o‐cresotate by alkali, show definite break when one equivalent of alkali is added indicating the formation of only one 1:1 mole ratio complex of beryllium and o‐cresotate.
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