Question

X-KOH-Cr(OH)3-Cr2O3 Напишите молекулярные уравнения реакций, с помощью которых можно осуществить указанные превращения. 1) 2) 3)

Answer 1

Відповідь:

2K+2H2O=2KOH+H2

3KOH+CrCI3=Cr(OH)3+3KCI

2Cr(OH)3=Cr2O3+3H2O

Пояснення:

Answer 2

X-KOH-Cr(OH)3-Cr2O3

The given chemical transformation involves the conversion of X to Cr2O3 through a series of reactions involving KOH and Cr(OH)3. Let's break down the reactions step by step:

1) X + KOH → XOH + K 2) XOH + Cr(OH)3 → XCrO4 + 3H2O 3) XCrO4 → Cr2O3 + X

Here's a detailed explanation of each step:

1) X + KOH → XOH + K In this reaction, X reacts with KOH (potassium hydroxide) to form XOH (metal hydroxide) and K (potassium). This is a simple acid-base reaction where the hydroxide ion from KOH reacts with the X ion to form the corresponding metal hydroxide.

2) XOH + Cr(OH)3 → XCrO4 + 3H2O In this reaction, XOH (metal hydroxide) reacts with Cr(OH)3 (chromium hydroxide) to form XCrO4 (metal chromate) and 3H2O (water). This is a double displacement reaction where the hydroxide ions from both compounds switch places to form the metal chromate and water.

3) XCrO4 → Cr2O3 + X In this reaction, XCrO4 (metal chromate) decomposes to form Cr2O3 (chromium oxide) and X. This is a decomposition reaction where the metal chromate breaks down into its constituent elements.

Please note that the specific identity of X is not provided, so it is not possible to determine the exact metal involved in the reactions. The reactions described above are general representations of the transformations based on the given information.

I hope this helps! Let me know if you have any further questions.