Determination of Quantum Yield for the Photochemical Decomposition of Dichloramine-B and Dibromamine-B in Aqueous Acetic Acid Medium | Zendy

K. N. Mohana | Zendy; Ningegowda Prasad | Zendy; P. M. Ramadas Bhandarkar | Zendy

Open Access

Determination of Quantum Yield for the Photochemical Decomposition of Dichloramine-B and Dibromamine-B in Aqueous Acetic Acid Medium

Author(s) -

K. N. Mohana,

Ningegowda Prasad,

P. M. Ramadas Bhandarkar

Publication year - 2007

Publication title -

journal of chemistry

Language(s) - English

Resource type - Journals

eISSN - 2090-9063

pISSN - 2090-9071

DOI - 10.1155/2007/413836

Subject(s) - chemistry , decomposition , photodissociation , acetic acid , quantum yield , aqueous solution , photochemistry , yield (engineering) , uranyl , ion , rate equation , kinetics , materials science , organic chemistry , optics , physics , quantum mechanics , metallurgy , fluorescence

The photolysis of dihaloamines (RNX2), viz., dichloramine-B (DCB) and dibroamine-B (DBB) in aq. acetic acid (1:1 vol./vol.) solns. has been studied with the UV light source (Î» = 2537 Ã…). The exptl. rate law obtained is - d[RNX2]/dt = k' I0/[RNX2], where I0 is the intensity of incident light. The addn. of benzenesulfonamide, the product of photolysis or uranyl ion had no significant effect on the rate of photochem. decompn. A slight decrease in the rate has been obsd. by the addn. of NaCl/NaBr to DCB/DBB solns. The quantum yield (Ï•) for the photolytic decompn. has been computed. A suitable photolytic mechanism and a rate law consistent with the obsd. results have been proposed. [on SciFinder(R)

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