These OH  ions are removed byincre

These OH  ions are removed by
increasing H +
ion concentration on decreasing pH. This will
facilitate the Eq. (1) forming more OH radicals, which will
be utilized for oxidative degradation of RB as well as thiocya-nate radical. On decreasing the pH further i.e. below 4.0, the
reaction rate decreases again. It may be attributed to the fact
that Eq. (2) starts dominating over Eq. (1) as Fe(OH) 3 is less
soluble than Fe(OH) 2 and the generation of OH radicals by
Eq. (2) is retarded at lower pH than 4.0 ( Dean, 1978)

ผลลัพธ์ (แอฟริกา) 1:

hierdie oh ione verwyder deur
toenemende h
konsentrasie op dalende pH. dit sal
fasiliteer die EQ. (1) die vorming van meer O radikale, wat vir oksidatiewe agteruitgang van rb sowel as thiocya-Nate radikale sal
benut kan word. op die vermindering van die pH verdere dws onder 4.0, die
reaksie koers daal weer. Dit kan toegeskryf word aan die feit dat
EQ. (2) begin oorheers oor EQ.(1) as Fe (OH) 3 is minder
oplosbare as Fe (OH) 2 en die generasie van O radikale deur
EQ. (2) is vertraag op 'n laer pH as 4.0 (dekaan, 1978).