What is the lowest whole number ratio between the aluminum ion and carbonate ion in the compound, aluminum carbonate? A. 2 :1

Question

What is the lowest whole number ratio between the aluminum ion and carbonate ion in the compound, aluminum carbonate?
A. 2 :1
B. 1: 1
C. 3 : 2
D. 1 : 2
E. 2 : 3

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Thành Đạt 4 years 2021-07-31T00:41:44+00:00 1 Answers 70 views 0

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  1. Bo
    0
    2021-07-31T00:43:26+00:00
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    Answer:

    E. 2 : 3

    Explanation:

    Aluminium carbonate is a neutral compound made by aluminium ion, Al³⁺ and carbonate ion, CO₃²⁻. As is neutral, the formula must be:

    Al₂(CO₃)₃.

    2 Al₃⁺ = 6 positives charges

    3 CO₃²⁻ = 6 negative charges

    Thus, the simplest whole number ratio between Al³⁺ and CO₃²⁻ must be:

    2:3

    And right answer is:

    E. 2 : 3

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )