Question

May be prepared.

2. You are provided with the following:- solid lead (II) nitrate, magnesium oxide powder,
dilute sulphuric (VI)acid and distilled water. Describe how you can prepare a dry sample of
lead (II) sulphate.
3.Using dots and crosses to represent electrons, draw the structures of the following:
(a) Phosphorous chloride (PC13)
(b) Hydroxonium ion
(H₂O*)
Study the set-up below and answer the questions that follow:
Cor-
↑↑:
Heat
Tuuble I
(a) (i) Name Gas X
个个
↑↑
Hileat
treat
Tube II Tuible III
Flaakk
(ii) State the effect of releasing gas X to the environment
(b) Write down equations for the reactions taking place in;

Answer 1

I can definitely help you with your questions! Let's tackle them step by step:

2. To prepare a dry sample of lead (II) sulfate, you can follow these steps:

- Add solid lead (II) nitrate to distilled water to dissolve it.

- Add dilute sulfuric (VI) acid to the solution to precipitate lead (II) sulfate as a solid.

- Carefully filter the precipitate to separate it from the solution.

- Wash the precipitate with distilled water to remove impurities.

- Dry the lead (II) sulfate precipitate, possibly using gentle heat, to obtain a dry sample.

3. Electron dot structures:

(a) Phosphorus trichloride (PCl₃):

P:

:Cl:

Cl:

(b) Hydroxonium ion (H₃O⁺):

H

|

H - O - H

|

H

4. Study the set-up:

(a) (i) Gas X is likely to be hydrogen gas (H₂).

(ii) Releasing hydrogen gas (X) into the environment will not have a significant impact, as hydrogen gas is lighter than air and will quickly dissipate.

(b) Equations for the reactions taking place in the tubes are missing from your message. Could you please provide more context or details about the reactions you're referring to in Tubes I, II, and III?

Feel free to provide more information if you need further assistance with the missing reactions or any other questions!