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Select the reagent that will separate the pairs of ions listed.

1. Ag+ and Al3+

2. Cu2+ and Ca2+

3. Mg2+ and K+

4. Ni2+ and Co2+

a) 6 M HCl

b) H2S, 0.2 M HCl

c) (NH4)2S, pH 8

d) (NH4)2 HPO4 in NH3

e) cannot be separated

Respuesta :

lavanyaande

1 - a, 2-b, 3-d, 4 - e

Explanation:

[tex]A g^{+} \text {and } A l^{3+}[/tex] - Separated by 6M HCl

Silver and aluminum ions can be separated using the acid, 6M HCl.

[tex]C u^{2+} \text { and } C a^{2+}[/tex]- Separated by H₂S

Copper and Calcium ions can be separated by the reagent hydrogen sulfide, H₂S.

[tex]M g^{2+} \text { and } K^{+}[/tex] - Separated by (NH₄)₂HPO₄ in NH₃

Magnesium and Potassium ions can be separated by the reagent Ammonium hydrogen phosphate in ammonia.

[tex]N i^{2+} \text { and } C o^{2+}[/tex]- cannot be separated

Nickel and Cobalt ion cannot be separated by the reagents given at all.

The selection of the reagent that will separate should be like

1 - a,

2-b,

3-d,

4 - e

Selection of the reagent:

Since

1. Ag+ and Al3+ - Separated by 6M HCl

Silver and aluminum ions should be distinct by using the acid, 6M HCl.

2. Cu2+ and Ca2+ - Separated by H₂S

Copper and Calcium ions should be distinct by the reagent hydrogen sulfide, H₂S.

3. Mg2+ and K+ - Separated by (NH₄)₂HPO₄ in NH₃

Magnesium and Potassium ions should be distinct by the reagent Ammonium hydrogen phosphate in ammonia.

4. Ni2+ and Co2+ - cannot be separated

Nickel and Cobalt ion cannot be distinct by the reagents given at all.

Learn more about ions here; https://brainly.com/question/21799955

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