The dissociation constant of m-nitroanilinium ion in water-tetrahydrofuran solvents at 25 C

Robinson, R. A.

doi:10.6028/jres.074a.039

Cited by 7 publications

(1 citation statement)

References 7 publications

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“…The function pX'BH+ is defined by pX'BH+ = log mBH+ /mBlog mH+ = pXBH+ + f(m) (3) where rrv represents the molal concentration of free hydrogen ions which Is assumed to be equal to the stoichiometric concentration of the acid in the solution. In the case of mNA a correction was made (14) for the concentration of HCI at equilibrium taking BH+ formed into consideration. The plots of 'ß * vs. m were found to be fairly linear in all solvent compositions.…”

Section: Resultsmentioning

confidence: 99%

Thermodynamics of protonation of m- and p-nitroanilines in water-acetonitrile and water-dimethylformamide mixtures

Subramanian¹,

Giridhar²,

Kalidas³

1987

J. Chem. Eng. Data

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The thermodynamic dissociation constants (pX") of m-nltroanlllnlum Ion (mNAH+) In water-acetonitrile (AN) and water-dimethylformamlde (DMF) mixtures and of p -nltroanlllnlum Ion (pNAH+) In water-DMF mixtures have been determined by a spectrophotometrlc method a 30 °C In various solvent compositions. While the pXa of mNAH+ Ion In water-AN mixtures passed through a minimum at 60 wt % AN, that of mNAH+ and pNAH+ Ions In water-DMF mixtures passed through a minimum at 80 wt % DMF. The solvent effect on the dissociation equilibria has been discussed, along with the available pXa data on pNAH+ In water-AN mixtures, In terms of the variation of transfer free energies of the various species Involved In the equilibria.

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Section: Resultsmentioning

confidence: 99%

Thermodynamics of protonation of m- and p-nitroanilines in water-acetonitrile and water-dimethylformamide mixtures

Subramanian¹,

Giridhar²,

Kalidas³

1987

J. Chem. Eng. Data

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Dissociation Constants of P‐Nitroanilinium Ion in Tetrahydrofuran‐Water Mixtures at 25°C by Spectrophotometric Measurements

El-Harakany

Ramadan

1984

J Chinese Chemical Soc

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Key Word Index-Dissociation constant; acidity function; ion-solvent interaction; thermodynamics of dissociation; ionization; solvent effect.A spectrophotometric method has been used for the determination of the dissociation constant of P·nitroanilinc indicator (which has a charge type A+BO) in various THF-water solvent mixtures at 2S"C. The dissociation constant is found to decrease with the addition of THF which indicates that the basicity of the medium is increased by the addition of the organic solvent.

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The dissociation constant ofm-nitroanilinium ion in water-sulfolane solvents at 25�C

Ang¹

1972

J Solution Chem

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The dissociation constant of m-nitroanilinium ion in water-tetrahydrofuran solvents at 25 C

Abstract: The di ssociation co nstant of m·nitroan ilinium ion has bee n de termined in wate r and in six wate rtetrahydrofuran mixtures. Th e res ults are compared with those for wate r-m e than ol mixtures.

Cited by 7 publications

References 7 publications

Thermodynamics of protonation of m- and p-nitroanilines in water-acetonitrile and water-dimethylformamide mixtures

Thermodynamics of protonation of m- and p-nitroanilines in water-acetonitrile and water-dimethylformamide mixtures

Dissociation Constants of P‐Nitroanilinium Ion in Tetrahydrofuran‐Water Mixtures at 25°C by Spectrophotometric Measurements

The dissociation constant ofm-nitroanilinium ion in water-sulfolane solvents at 25�C

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