Conductivity of Aminomethanesulphonic Acids N-Derivatives Aqueous Solutions

Khoma, R. E.; Chebotaryov, A. N.; Kalarash, K. N.; Osadchiy, L. T.

doi:10.18524/2304-0947.2018.3(67).140798

Cited by 3 publications

(4 citation statements)

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“…The latter, obviously, indicates a decrease in the mobility of hydroxide ions in solutions of MeAMSNa, HEAMSNa, t-BuAMSNa, BzAM-SNa, compared with the value of mobility during the transfer along the chains of water H-bonds. A similar situation occurs with the mobility of hydroxonium ions in aqueous solutions of MeAMSA, HEAMSA, t-BuAMSNa [16] and aspartic acid [22], as well as with the mobility of hydroxyl ions in HEAMSA solutions [16].…”

Section: Phisical Chemistrymentioning

confidence: 60%

“…For the reactions of association and dimerization, the activation entropies have large numerical values [24]. The same is observed for the molar electrical conductivity of aqueous solutions of N-alkylaminomethanesulfonic acids [16].…”

Section: Activation Parameters Of Electrical Conductivity Of Aqueous mentioning

confidence: 87%

“…1b) and YАМSNa -Н 2 О (Fig. 2b -5b), an increase in temperature from 293 to 313 K is accompanied by an increase in the electrical conductivity of the systems (similar to aqueous solutions of AMSA [15], YAMSA [16] and glycine [11]) due to an increase in the degree of dissociation of electrolytes and (or) the mobility of the resulting ions. In this case, for all the systems under study, acidic properties decrease with an increase in temperature from 293 to 308 K ( Fig.…”

Section: Phisical Chemistrymentioning

confidence: 94%

“…(22), and the values of the limiting electrical conductivity (λ 0 ) are numerically equal to the coefficients В 0 . Thus, the experimental values of the limiting molar electrical conductivity of aqueous solutions of sodium aminomethanesulfonates obtained by extrapolation according to Shidlovsky, like λ 0 of aqueous solutions of N-derivatives of amino-methanesulfonic acid [16], increase with increasing temperature.…”

Section: Phisical Chemistrymentioning

confidence: 94%

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Electrochemical Properties of Aqueous Solutions of Sodium Aminomethanesulfonates

Khoma¹,

Еннан²,

Chebotaryov³

et al. 2020

Ukr. Chem. Journ.

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The pH and conductometric study of the electrochemical properties of aqueous solutions (1∙10-4 ÷ 9∙10-3 М) YNHCH2SO3Na (Y = H, CH3, HOCH2CH2, (CH3)3C and C6H5CH2) was carried out. The values of the limiting electrical conductivity were calculated by extrapolation according to Shidlovsky. The activation parameters of the electrical conductivity of the systems “sodium aminomethanesulfonate – H2O” at 293-313 K were obtained.

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Section: Phisical Chemistrymentioning

confidence: 60%

Section: Activation Parameters Of Electrical Conductivity Of Aqueous mentioning

confidence: 87%

Section: Phisical Chemistrymentioning

confidence: 94%

Section: Phisical Chemistrymentioning

confidence: 94%

See 2 more Smart Citations

Electrochemical Properties of Aqueous Solutions of Sodium Aminomethanesulfonates

Khoma¹,

Еннан²,

Chebotaryov³

et al. 2020

Ukr. Chem. Journ.

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Hydrolysis and Electrical Conductivity of Methylamonium Sulfamate Aqueous Solutions

Khoma¹,

Еннан²,

Vodzinskii³

et al. 2020

Odesa National University Herald. Chemistry

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Aminomethansulfonic and Alkylaminomethansulfonic Buffer Systems

et al. 2019

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The investigations of acid-base interactions in aminomethanesulfonic acid (AMSA)–potassium aminomethanesulfonate–water and alkylaminomethanesulfonic acid–potassium alkylaminomethane-sulfonate–water systems, where alkyl are methyl (MeAMSA), N-(2-hydroxyethyl) (HEAMSA), n-propyl (n-PrAMSA), n-butyl (n-BuAMSA), tert-butyl (t-BuAMSA), n-heptyl (n-HpAMSA) and benzyl (BzAMSA) were performed in temperature range 293–313 К. Buffer action pH limits were determined and the buffer capacity of these systems was estimated.Based on the evaluation of buffer action pH limits of aminomethansulfonic acids, it has been found that with the help of n-PrAMSA and n-BuAMSA, it was possible to maintain the medium acidity in the range of physiological pH values throughout the range of investigated temperatures.As the temperature rises, the pH of the lower buffer limit increases for AMSA and n-BuAMSA systems, while for HEAMSA, t-BuAMSA, n-HpA-MSA and BzAMSA decreases. The value of the pH of the upper buffer threshold for all tested systems decreases during their heating. With the increase of the electron-donor properties of the N-substituent in the AMSA–MeAMSA–HEAMSA–t-BuAMSA series, the value of their electronegativity decreases to result in lowering of the pH values of the lower buf-fering action limit of these systems. For the more lipophilic N-substituents (n-C4H9, n-C7H15 and C6H5CH2), this regularity is not typical.It has been established that with increasing the CYAMSK/CYAMSA concentration ratio, the buffer capacity of YNHCH2SO3H–YNHCH2SO3K–H2O systems with hydrophilic aminomethansulfonic acids (Y = H, CH3 and HOCH2CH2) increases. For systems with lipophilic n-PrAMSA and t-BuAMSA, their buffer capacity doesn’t change at 0.4 ≤ QKOH/QYAMSA ≤ 1.0.The obtained data on the buffer capacity of the investigated systems is recommended for use in chemical analysis, microbiological and biochemical studies.

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Conductivity of Aminomethanesulphonic Acids N-Derivatives Aqueous Solutions

Cited by 3 publications

References 0 publications

Electrochemical Properties of Aqueous Solutions of Sodium Aminomethanesulfonates

Electrochemical Properties of Aqueous Solutions of Sodium Aminomethanesulfonates

Hydrolysis and Electrical Conductivity of Methylamonium Sulfamate Aqueous Solutions

Aminomethansulfonic and Alkylaminomethansulfonic Buffer Systems

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