Originally Posted by

**starfire09**
I've got a lab coming up in my AP chemistry class, and I wanted to get a bit of help from here (I hope this is the right section for this, I couldn't find the Homework Help section after the site renovation). In this lab, we get 12 chemicals in numbered containers (1-12). We know what the 12 possible chemicals are, but we don't know which is in which container. The 12 chemicals are the following:

.2M Potassium Chromate

1.0M Aluminum Chloride

1.0M Sodium Carbonate

6.0M Hydrochloric Acid

6.0M Sodium Hydroxide

0.1M Silver Nitrate

6.0M Ammonia

0.1M Lead (II) Nitrate

0.1M Ferric Nitrate

1.0M Sodium Acetate

0.1M Copper (II) Sulfate

0.1M Nickel Chloride

I determined the following process using properties of the solutions and combinations of them. This is what I figured out:

1) The following solutions can be determined by observable factors:

Potassium Chromate - Yellow Solution

Aluminum Chloride - White/Pale Yellow solution

Copper (II) Sulfate - Blue solution

Nickel Chloride - Green solution

Ammonia - The ass-smelling solution

Sodium Hydroxide - The extremely basic solution (Use of litmus paper)

2) React the Potassium Chromate solution with the non-determined solutions:

Silver Nitrate - Red solution with maroon precipitate

Lead (II) Nitrate - Yellow-Orange precipitate

3) React the Silver Nitrate solution with the remaining non-determined solutions:

Sodium Carbonate - Yellow Precipitate

Hydrochloric Acid - White Precipitate

Sodium Acetate - Grayish Precipitate

4) Only remaining solution is Ferric Nitrate

Would the steps I provided allow me to determine all the solutions with precision? There are a couple steps which I am unsure about (Would NaOH be significantly more basic on litmus paper than the other basic solutions? Is Silver Acetate noticeably gray?). If anybody could verify that I am using decently planned steps, or if I haven't, provide some input on how I could fix my process, I would really appreciate it!