Testing for Ions by

Useful websites

wilkes_johnw — 2017-06-07 23:21:11 UTC

Identification of compounds

http://www.yenka.com/activities/Identification_of_Ions_1_-_Activity/

Anion tests

http://www.bbc.co.uk/schools/gcsebitesize/science/add_edexcel/ionic_compounds/ionicanalysisrev5.shtml

Testing for cations

https://scienceaid.net/chemistry/applied/testcations.html

Qualitative Chemistry Tests

http://chemistryforsg-olevel.blogspot.com.au/2012/01/qualitative-analysis-testing-for_02.html

Example lab report

http://kaskaskia.edu/BCambron/Chemistry%20103/04%20Qualitative%20Analysis.pdf

Why would someone want to test for cations and anions?

wilkes_johnw — 2017-06-07 23:21:36 UTC

What tests are available for testing cations?

wilkes_johnw — 2017-06-07 23:22:49 UTC

What tests are available for testing anions?

wilkes_johnw — 2017-06-07 23:23:06 UTC

Explain how the test for cations and anions work with regards to chemistry. Discuss bonds, electrons, precipitation reactions, etc

wilkes_johnw — 2017-06-07 23:23:37 UTC

What are some practical applications of testing for ions in the real world? Give some examples

wilkes_johnw — 2017-06-07 23:24:16 UTC

Assume you were using the sodium hydroxide test to test for cations and both metal ions produced very similar coloured solids. What would you do to confirm they’re not the same metal?

wilkes_johnw — 2017-06-07 23:25:30 UTC

You are tasked to find out whether a lake is contaminated with Zinc. You perform your testing for cations firstly starting with the Sodium Hydroxide test. Explain what you would find. Is your test conclusive? Why/why not? How would you reach a conclusion?

wilkes_johnw — 2017-06-07 23:25:45 UTC

How would you test urine for phosphate and chloride ions?

wilkes_johnw — 2017-06-07 23:26:56 UTC

A R M

2017-06-08 00:26:30 UTC

1) Why would someone want to test for cations and anions?
A: To find out the chemicals and ions inside something
2) What tests are available for testing cations?
A: flame test, odium hydroxide
3) What tests are available for testing anions?
A: test for sulfate, halide, and carbonate ions.

S.J.C.M

2017-06-08 00:26:45 UTC

1. To see what chemicals are present in a mixture.
2.
- Precipitation reaction
- Flame test.
- Ammonium ions can be identified in a solution by adding dilute sodium hydroxide solution and gently heating.
3.
- Precipitation reaction
- Diluted hydrochloric acid added to a test compound
- Reducing them to ammonia by adding sodium hydroxide solution, then aluminium powder or foil and heating strongly

Ethan's group: why would someone want to test for cations and anions

2017-06-08 00:26:52 UTC

What tests are available for testing cations?

2017-06-08 00:30:15 UTC

flame test
sodium hydroxide

Ethan's group: what tests are available for testing cations

2017-06-08 00:31:42 UTC

flame test and sodium hydroxide

Ethan's group: explain how the test for the cations and anions work with regards to chemistry. discuss bonds, elections, precipitation reactions, etc.

2017-06-08 00:32:51 UTC

you got something you add something and it creates precipitation.

Assume you were using the sodium hydroxide test to test for cations and both metal ions produced very similar coloured solids. What would you do to confirm they’re not the same metal?

2017-06-08 00:35:19 UTC

1. Test the pH of the coloured solids
2. use other test to test the ions

Figure 6. | Lithium flame test.

Figure 7. | Sodium flame test.

Figure 8. | Potassium flame test.

Figure 9. | Barium flame test.

To test water quality/pollution

wduck3 — 2017-06-08 00:36:27 UTC

DCS

DCS

2017-06-08 00:37:05 UTC

Why would someone want to test for cations and anions?
1. to test for microscopitc contents of water
2.

(NOT) William Duckworth

2017-06-08 00:41:41 UTC

Sometime need to test which components are dissolved into water. For example a scientist might need to test for water pollution finds cations and Anions which assist in this.

A way to test for cations and anions :

2017-06-08 00:41:56 UTC

Qualitative analysis

S.J.C.M

2017-06-08 00:45:42 UTC

1.
2.
- Testing polluted water
- Identify contents in an organic mixture

A R M

2017-06-08 00:47:13 UTC

1) The test for cations and anions work with regards to chemistry by exchanging electrons creating a different mixture of solutions as well as forming a precipitate.
2) Factories use tests for ions to test for the contents of soft drink.

Assuming you are using the sodium hydroxide test to test cations and both metal ions produced very similar colored solids. what would you do to confirm they are not the same metal

2017-06-08 00:48:41 UTC

S.J.C.M

2017-06-08 00:50:40 UTC

3. Phosphate urine test

When testing for Zinc using the Sodium Hydroxide test, a second test would have to be performed. By adding diluted amonia, if Zinc was present then the white precipitate would redissolve.

2017-06-08 00:50:55 UTC

- Susi, Cooper, and Duckworth

A R M

2017-06-08 00:54:02 UTC