IOM 2021, Блиц — Задача 55

The Blitz-contest of IOM-2021

Условие

Consider the reaction sequence.

Cr2O3→1CrCl3(anhydrous)→2Na3[Cr(OH)6]→3Na2CrO4\mathrm{Cr_2O_3} \xrightarrow{1} \mathrm{CrCl_3(anhydrous)} \xrightarrow{2} \mathrm{Na_3[Cr(OH)_6]} \xrightarrow{3} \mathrm{Na_2CrO_4}

Find the correspondence between the reaction number and the reaction conditions.

  • HCl/H2O\mathrm{HCl/H_2O}
  • NH3/H2O\mathrm{NH_3/H_2O}
  • NaOH(excess)/H2O\mathrm{NaOH(excess)/H_2O}
  • Cl2/NaOH\mathrm{Cl_2/NaOH}
  • C, Cl2, t\mathrm{C,\ Cl_2},\ t

Отговори

Решение

Оригинал в Архива: iom-2021-blitz-tasks-eng.pdf · официални решения: iom-2021-blitz-answers-eng.pdf