Some cleansers contain bromate salts as the oxidizing agent. The bromate ion, Br
ID: 1050399 • Letter: S
Question
Some cleansers contain bromate salts as the oxidizing agent. The bromate ion, BrO_3^- oxidizes the iodide ion as follows: BrO_3^- + 6 I^- + 6 H^+ rightarrow 3 I_2 + Br^- + 3 H_2O On a molar basis, which is a more effective bleaching agent, KBrO_3 or NaOCl? Explain why analysis of commercial bleaching solutions will often show a lower OCl^- ion content than is advertised on the bottle. A student prepared all of his titration mixtures, containing diluted bleach, solution, and HCl solution, at the some time. Why was the precision poor? How many electrons are exchanged in the reaction in problem (1)?Explanation / Answer
Some cleansers contain bromate salts as the oxidizing agent. The bromate ion, BrO3 oxidizes the iodide ion as follows:
BrO3 + 6I + 6H+ ---> 3I2 + Br + 3H2O
On a molar basis, which is a more effective bleaching agent, KBrO3 or NaOCl?
Sodium hypochlorite:
It is the most effective bleaching agent, ...
Cl2 (g) + 2 NaOH (aq) NaCl (aq) + NaClO (aq) + H2O (l)
he weak solution of sodium hypochlorite is utilized as a part of numerous family units to brighten clothing, sanitize hard surfaces in kitchens and bathrooms, treat water for drinking and continue swimming pools free of irresistible operators.
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Q2
Explain why analysis of commercial bleaching power solution will often show a lower ocl ion content than advertised on the bottle
Hypochlorous acid is in equilibrium with chlorine .
Chlorine might escape as chlorine gas if the bottle is not sealed tightly.
Cl2(aq) + h2o(l) <--> 2h+(aq) + cl-(aq) + clo-(aq)
cl2(aq) <--> cl2(g)
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