I need a chemistry lab done in 12 hours

Lab9-QualitativeAnalysis.pptx

Qualitative Analysis

Lab 9

Objectives

Explore the solubility properties of salts

Examine precipitation reactions

Create a flowchart for determining ions present in unknown mixtures

Safety

Be careful not to spill, some of the chemicals can irritate skin

Let me know if you spill or break anything!

Qualitative Analysis

A branch of analytical chemistry

We separate a reagent from the mixture

We then identify it through precipitation and extraction

Double Displacement Reaction

The positively charged atom matches up with the negative charged atom

Part I

Use a medicine dropper to transfer the various solutions into your test tube

Use the small test tubes

If needed, then you can centrifuge your solution

Make sure the centrifuge is balanced

If you are unsure if you have a precipitate, centrifuge it!

Only test one metal at a time

Your metal table on page 70 has to be correct in order to get the correct flowchart

Data analysis on page 71 – must answer this in your lab write up – goes under the “Data Analysis and Calculations” section

Polyatomic Ions

Charged chemical species composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit.

Part II

Construct the flowchart

Answer all of the questions before moving on to Part III

Part I #3 will help with making the flowchart

Part III

I will provide you and your lab partner with an unknown which contains 2-4 unknown metal ions

They are all different

Determine the ions present in your unknown based on the data and flowchart that you created in Part II

For next week…

Typed lab report due on D2L and hard copy- Due on Tuesday April 2

Include your flowchart (handwritten or made on the computer)

Lab 10 is TBD

I will likely being posting it on Monday April 1

Make sure to check D2L and print off a copy for yourself

Only 3 more labs after today!