- 發問於 科學及數學化學 · 1 十年前

How to obtain Cr3+ precipitate

Cr3+ +Na2CO3--> ?

I want the equation...

1 個解答

評分
  • 1 十年前
    最愛解答

    The precipitate of chromium(III) carbonate can be obtained by adding a solution containing Cr^3+ ions to a solution of sodium carbonate solution.

    The ionic equation is:

    2Cr^3+(aq) + 3CO32-(aq) → Cr2(CO3)3(s)

    Since the anions in the solution containing Cr^3+ ions are unknown, only ionic equation can be written and we are unable to write the full equation. However, if the anions are known, we can write the full equation. For example, when a solution of chromium(III) chloride is added to sodium carbonate solution, the equation of the reaction is:

    2CrCl3(aq) + 3Na2CO3(aq) → Cr2(CO3)3(s) + 6NaCl(aq)

    資料來源: micatkie
還有問題嗎?立即提問即可得到解答。