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Which sentence is false about EDTA ? (a). (b). (c). Alkali medium is required for complex ion because EDTA will ionizes more in alkali medium. EDTA form complexes with all metal ions. Ethylene diamine tetra acetic acid (EDTA) and its disodium salts are versatile complexometric agents. Alkali medium is required for complex ion because EDTA will ionizes more in acidic medium. (d).

Which sentence is false about EDTA ? (a). (b). (c). Alkali medium is required for complex ion because EDTA will ionizes more in alkali medium. EDTA form complexes with all metal ions. Ethylene diamine tetra acetic acid (EDTA) and its disodium salts are versatile complexometric agents. Alkali medium is required for complex ion because EDTA will ionizes more in acidic medium. (d).

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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When is a direct EDTA titration not useful? When the metal precipitates in the absence of EDTA. When the metal reacts too quickly with EDTA. When the metal does not block the indicator. None of the above. The reaction of EDTA with a trivalent metal ion at a pH of 4.0 may be written as: (The pK values for EDTA are pK, = 0.0; pK2 = 1.5, pK3 = 2.0; pK. = 2.66; pKs = 6.16; pK6 = 10.24) (2). M3 + Y4 <===> MY-. M3 + HAY <==--> MY + 4H*. M3 + H2Y2- <-=-> MY+2H*. M3* + H3Y =--> MY+3H*. (3) Which sentence is false about EDTA ? (a). (b). (c). Alkali medium is required for complex ion because EDTA will ionizes more in alkali medium. EDTA form complexes with all metal ions. Ethylene diamine tetra acetic acid (EDTA) and its disodium salts are versatile complexometric agents. Alkali medium is required for complex ion because EDTA will ionizes more in acidic medium. (d). (4) Spectrophotometric analysis based on Beer's Law (a) (b) (c) (d) Must be done using a double beam instrument. Requires the use of monochromatic light.. Can only be done in the visible region of the spectrum. Can only be done in the UV region of the spectrum. (5). Retention time is defined as (а) (b) (c) The time needed for an individual band of analyte to be eluted. The time needed for all solutes in a sample to be eluted. The time needed after injection for an individual solute to be eluted. Tenda EN
Transcribed Image Text:When is a direct EDTA titration not useful? When the metal precipitates in the absence of EDTA. When the metal reacts too quickly with EDTA. When the metal does not block the indicator. None of the above. The reaction of EDTA with a trivalent metal ion at a pH of 4.0 may be written as: (The pK values for EDTA are pK, = 0.0; pK2 = 1.5, pK3 = 2.0; pK. = 2.66; pKs = 6.16; pK6 = 10.24) (2). M3 + Y4 <===> MY-. M3 + HAY <==--> MY + 4H*. M3 + H2Y2- <-=-> MY+2H*. M3* + H3Y =--> MY+3H*. (3) Which sentence is false about EDTA ? (a). (b). (c). Alkali medium is required for complex ion because EDTA will ionizes more in alkali medium. EDTA form complexes with all metal ions. Ethylene diamine tetra acetic acid (EDTA) and its disodium salts are versatile complexometric agents. Alkali medium is required for complex ion because EDTA will ionizes more in acidic medium. (d). (4) Spectrophotometric analysis based on Beer's Law (a) (b) (c) (d) Must be done using a double beam instrument. Requires the use of monochromatic light.. Can only be done in the visible region of the spectrum. Can only be done in the UV region of the spectrum. (5). Retention time is defined as (а) (b) (c) The time needed for an individual band of analyte to be eluted. The time needed for all solutes in a sample to be eluted. The time needed after injection for an individual solute to be eluted. Tenda EN
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