Determination of carbohydrazide and kinetics of condensation reaction of carbohydrazide with malachite green by spectrophotometry

Tao Wu; Tong Lai Zhang; Hong Yan Chen; Jian Guo Zhang

doi:10.1002/cjoc.200590011

Determination of carbohydrazide and kinetics of condensation reaction of carbohydrazide with malachite green by spectrophotometry

Tao Wu^*, Tong Lai Zhang, Hong Yan Chen, Jian Guo Zhang

^*Corresponding author for this work

School of Mechatronical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

The kinetics of the condensation reaction of malachite green and carbohydrazide was studied by spectrophotometry in aqueous solution in the temperature range of 15.0-22.0 °C. The reaction was found to be second-order overall, first-order with respect to each reactant. The effect of ionic strength on the reaction has negative salt effect in the range of 0.2-1.0 mol⊖L^-1. A mechanism of the reaction between malachite green and carbohydrazide was proposed, and the rate equation derived from the mechanism can explain all experimental observations properly. Based on this reaction, a method of determining the content of carbohydrazide in the concentration range of (0.02-0.5) × 10^-3 mol⊖L ^-1 was proposed.

Original language	English
Pages (from-to)	50-53
Number of pages	4
Journal	Chinese Journal of Chemistry
Volume	23
Issue number	1
DOIs	https://doi.org/10.1002/cjoc.200590011
Publication status	Published - Jan 2005

Keywords

Carbohydrazide
Kinetics and mechanism
Malachite green
Spectrophotometry

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10.1002/cjoc.200590011

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title = "Determination of carbohydrazide and kinetics of condensation reaction of carbohydrazide with malachite green by spectrophotometry",

abstract = "The kinetics of the condensation reaction of malachite green and carbohydrazide was studied by spectrophotometry in aqueous solution in the temperature range of 15.0-22.0 °C. The reaction was found to be second-order overall, first-order with respect to each reactant. The effect of ionic strength on the reaction has negative salt effect in the range of 0.2-1.0 mol⊖L-1. A mechanism of the reaction between malachite green and carbohydrazide was proposed, and the rate equation derived from the mechanism can explain all experimental observations properly. Based on this reaction, a method of determining the content of carbohydrazide in the concentration range of (0.02-0.5) × 10-3 mol⊖L -1 was proposed.",

keywords = "Carbohydrazide, Kinetics and mechanism, Malachite green, Spectrophotometry",

author = "Tao Wu and Zhang, {Tong Lai} and Chen, {Hong Yan} and Zhang, {Jian Guo}",

year = "2005",

month = jan,

doi = "10.1002/cjoc.200590011",

language = "English",

volume = "23",

pages = "50--53",

journal = "Chinese Journal of Chemistry",

issn = "1001-604X",

publisher = "John Wiley and Sons Inc.",

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TY - JOUR

T1 - Determination of carbohydrazide and kinetics of condensation reaction of carbohydrazide with malachite green by spectrophotometry

AU - Wu, Tao

AU - Zhang, Tong Lai

AU - Chen, Hong Yan

AU - Zhang, Jian Guo

PY - 2005/1

Y1 - 2005/1

N2 - The kinetics of the condensation reaction of malachite green and carbohydrazide was studied by spectrophotometry in aqueous solution in the temperature range of 15.0-22.0 °C. The reaction was found to be second-order overall, first-order with respect to each reactant. The effect of ionic strength on the reaction has negative salt effect in the range of 0.2-1.0 mol⊖L-1. A mechanism of the reaction between malachite green and carbohydrazide was proposed, and the rate equation derived from the mechanism can explain all experimental observations properly. Based on this reaction, a method of determining the content of carbohydrazide in the concentration range of (0.02-0.5) × 10-3 mol⊖L -1 was proposed.

AB - The kinetics of the condensation reaction of malachite green and carbohydrazide was studied by spectrophotometry in aqueous solution in the temperature range of 15.0-22.0 °C. The reaction was found to be second-order overall, first-order with respect to each reactant. The effect of ionic strength on the reaction has negative salt effect in the range of 0.2-1.0 mol⊖L-1. A mechanism of the reaction between malachite green and carbohydrazide was proposed, and the rate equation derived from the mechanism can explain all experimental observations properly. Based on this reaction, a method of determining the content of carbohydrazide in the concentration range of (0.02-0.5) × 10-3 mol⊖L -1 was proposed.

KW - Carbohydrazide

KW - Kinetics and mechanism

KW - Malachite green

KW - Spectrophotometry

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U2 - 10.1002/cjoc.200590011

DO - 10.1002/cjoc.200590011

M3 - Article

AN - SCOPUS:14744276192

SN - 1001-604X

VL - 23

SP - 50

EP - 53

JO - Chinese Journal of Chemistry

JF - Chinese Journal of Chemistry

IS - 1

ER -

Determination of carbohydrazide and kinetics of condensation reaction of carbohydrazide with malachite green by spectrophotometry

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