Question

What would be the pH of 0.5M solution of sodium nitrite in water ? ($\rm K_{a}$ of $\rm HNO_2= 7×10^{-4}$) ( Assume 1-$\alpha$ = 1 )​

Answer 1

Answer:

Sample = the selected elements (people or objects) chosen for participation in a study; people are referred to as subjects or participants.

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Answer 2

Answer:

The rate of the reaction of nitrite with hypobromite/hypobromous acid was studied over a wide range of H+ concentrations (6.5 ≤ − log [H+] ≤ 10). The kinetics were measured as a function of NO2-, H+ and total Br(I) ([HOBr]total = [HOBr] + [BrO-] + [BrNO2]) concentrations. A mechanism is proposed for nitrite oxidation involving the reversible formation of BrNO2, which is then attacked by NO2- to yield N2O4 in the rate-determining step. The second-order rate coefficient k1 for the latter reaction was determined at different ionic strengths in two aqueous media:  NaCl and Na2SO4. Finally, a quantitative comparison of nitrite oxidation by HOBr/BrO- and HOCl/ClO- is presented