Question

Число катионов вдвое больше числа анионов в водном растворе: a.HCI b. BaCl2 C. Al(NO3)3 d.Na2SO4

Answer 1

Ответ: d) Na₂SO₄

Объяснение:

Na₂SO₄ --> 2Na⁺ + SO₄²⁻ ; как мы видим, число катионов(Na⁺) вдвое больше чем анионов(SO₄²⁻)

Answer 2

Number of Cations and Anions in Aqueous Solution

The number of cations and anions in an aqueous solution can be determined by examining the chemical formula of the compound. Let's analyze each option provided:

a. HCI (hydrochloric acid): In this compound, there is one hydrogen cation (H+) and one chloride anion (Cl-) present. Therefore, the number of cations is 1 and the number of anions is 1.

b. BaCl2 (barium chloride): In this compound, there is one barium cation (Ba2+) and two chloride anions (Cl-) present. Therefore, the number of cations is 1 and the number of anions is 2.

c. Al(NO3)3 (aluminum nitrate): In this compound, there is one aluminum cation (Al3+) and three nitrate anions (NO3-) present. Therefore, the number of cations is 1 and the number of anions is 3.

d. Na2SO4 (sodium sulfate): In this compound, there are two sodium cations (Na+) and one sulfate anion (SO42-) present. Therefore, the number of cations is 2 and the number of anions is 1.

To summarize:

- a. HCI: 1 cation, 1 anion - b. BaCl2: 1 cation, 2 anions - c. Al(NO3)3