1. Which of the following statements define metal coordination compounds. (Selec

Question

1. Which of the following statements define metal coordination compounds. (Select ALL that apply).

Select one or more:

a. A metal-containing compound where small molecules surround a metal centre.

b. A compound formed between a metal and Lewis bases which act as ligands.

c. A compound formed between a metal and Lewis acids which act as ligands.

d. A metal-containing compound with no organic molecules included in the structure.

2. In many metal containing solutions, addition of ammonia causes a hydroxide precipitate to form. Select the statement(s) below which best describe this observation.

Select one or more:

a. The addition of NH3, results in a reaction between ammonia and OH-, causing the pH to increase.

b. The addition of NH3, results in a reaction between ammonia and water, causing [OH-] to increase.

c. The addition of NH3 causes the pH to decrease thus increasing the [OH-].

d. The addition of NH3 causes the pH to increase thus increasing the [OH-].

3. A precipitation reaction is:

a. A reaction where two solids are mixed together to form a solution of soluble ions

b. A reaction where a solid is dissolved in a solvent

c. A reaction where solutions of soluble ions are mixed together to form an insoluble compound

Explanation / Answer

1) b. A compound formed between a metal and Lewis bases which act as ligands.

2) b. The addition of NH3, results in a reaction between ammonia and water, causing [OH-] to increase. (d.) The addition of NH3 causes the pH to increase thus increasing the [OH-].

3) c. A reaction where solutions of soluble ions are mixed together to form an insoluble compound

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