Question

1,Водный раствор йодовородной кислоты,оставленный в открытом стакане на воздухе,постепенно окрашивается в жёлтый и далее в коричневый цвет за счёт образования в нём вечества Х.(решено)1.1,Напишите формулу вещества Х ,обусловливающего окраску раствора,

Answer 1

Йодоводород потихонечку окисляется кислородом воздуха: 4HI + O2 = 2H2O + 2I2.

Answer 2

The Substance Responsible for the Color Change in the Solution

The yellow and brown coloration of the aqueous solution of hydrogen iodide (HI) left in an open glass on the air is due to the formation of a substance called iodine (I2). The reaction can be represented by the following equation:

2HI (aq) → I2 (aq) + H2 (g)

In this reaction, hydrogen iodide (HI) is oxidized to iodine (I2), which is responsible for the yellow and brown color of the solution. The hydrogen gas (H2) is also produced as a byproduct.

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