Qualitative Analysis

Do a flame test on solution W. Describe the method you use.

method _____

observations _____

conclusion _____

To $1\text{ cm}$ depth of W in a test-tube, add $1\text{ cm}$ depth of aqueous chlorine. Keep this mixture for use in (b)(ii).

observations _____

conclusion _____

Add $1\text{ cm}$ depth of starch solution to the contents of the solution from (b)(i).

observations _____

Test W for the presence of sulfate ions. Describe how you do the test and record your observations.

test _____

observations _____

To $1\text{ cm}$ depth of W in a test-tube, add $1\text{ cm}$ depth of dilute nitric acid and $1\text{ cm}$ depth of aqueous silver nitrate.

observations _____

conclusion _____

To $1\text{ cm}$ depth of W in a test-tube, add $1\text{ cm}$ depth of aqueous iron(III) nitrate.

observations _____

Put $1\text{ cm}$ depth of X into a boiling tube.

Add aqueous sodium hydroxide until no further change is seen.

Keep the mixture for use in (f)(ii).

observation _____

conclusion about solution X _____

Put a $1\text{ cm}$ depth of the mixture from (f)(i) into a clean boiling tube.

Add a small piece of aluminium foil to the mixture and warm gently.

Test any gas evolved.

observations _____

conclusion about solution X _____

Put $1\text{ cm}$ depth of W into a boiling tube. Add $1\text{ cm}$ depth of aqueous sodium hydroxide. Gently warm the mixture.

Test the gas given off.

Describe the test and its result.

Identify the gas.

Keep the mixture for use in (b).

test for gas and result = ______
identity of gas = ______

Add $2\text{ cm}$ depth of dilute nitric acid to the mixture from (a).

Then add $1\text{ cm}$ depth of aqueous barium nitrate.

Record your observations.

______

Identify the cation and the anion in W.

cation = ______ anion = ______

Tests on solid X

Put one of the samples of X into a boiling tube and use a measuring cylinder to add $7\text{ cm}^3$ of dilute nitric acid.

Record your observations.

Test the gas given off.

Describe the test and its result.

Identify the gas.

Keep the mixture for use in (e) and (f).

observations = ______
test for gas and result = ______
identity of gas = ______

Use a measuring cylinder to transfer $2\text{ cm}^3$ of the mixture from (d) into a test-tube.

Add aqueous sodium hydroxide drop by drop until a change is seen.

Then add a further $2\text{ cm}$ depth of aqueous sodium hydroxide.

Record your observations.

______

Use a measuring cylinder to transfer $2\text{ cm}^3$ of the mixture from (d) into a test-tube.

Add aqueous ammonia drop by drop until a change is seen.

Then add more aqueous ammonia until a further change is seen.

Record your observations.

______

Identify the cation and the anion in X.

cation = ______ anion = ______

Put $1\text{ cm}$ depth of W into a test-tube. Add aqueous sodium hydroxide drop by drop until a change is seen.

Then add a further $2\text{ cm}$ depth of aqueous sodium hydroxide.

Record your observations.

______

Put $1\text{ cm}$ depth of W into a test-tube. Add $2\text{ cm}$ depth of dilute nitric acid and then add $1\text{ cm}$ depth of aqueous barium nitrate.

Record your observations.

______

Identify the cation and the anion in W.

cation = ______ anion = ______

Put $1\text{ cm}$ depth of W into a boiling tube. Add $1\text{ cm}$ depth of aqueous hydrogen peroxide.

Record your observations.

Test the gas given off.

Describe the test and its result.

Identify the gas.

Keep the mixture for use in (e).

observations = ______
test for gas and result = ______
identity of gas = ______

Add aqueous sodium hydroxide drop by drop to the mixture from (d) until a change is seen.

Then add a further $2\text{ cm}$ depth of aqueous sodium hydroxide.

Record your observations.

______

Identify the cation produced by the reaction in (d).

______

Test on solid X

Put a piece of X into a test-tube and add $2\text{ cm}$ depth of dilute sulfuric acid.

Record your observations.

Test the gas given off.

Describe the test and its result.

Identify the gas.

observations = ______
test for gas and result = ______
identity of gas = ______

Suggest the identity of X.

______

Put $1\text{ cm}$ depth of X into a boiling tube. Add aqueous sodium hydroxide drop by drop until a change is seen.

Then add a further $2\text{ cm}$ depth of aqueous sodium hydroxide.

Record your observations.

Keep the mixture for use in (b).

______

Gently warm the mixture from (a) in the boiling tube.

Test the gas given off.

Describe the test and its result.

Identify the gas.

test for gas and result = ______
identity of gas = ______

Put $1\text{ cm}$ depth of X into a test-tube. Add aqueous ammonia drop by drop until a change is seen.

Then add a further $2\text{ cm}$ depth of aqueous ammonia.

Record your observations.

______

Identify the two cations in X.

______ and ______

Tests on solution Y

Put a piece of magnesium into a test-tube. Add $1\text{ cm}$ depth of solution Y.

Record your observations.

Test the gas given off.

Describe the test and its result.

Identify the gas.

observations = ______
test for gas and result = ______
identity of gas = ______

Put $1\text{ cm}$ depth of Y into a test-tube. Add $1\text{ cm}$ depth of dilute nitric acid.

Then add $1\text{ cm}$ depth of aqueous silver nitrate.

Record your observations.

______

Identify the cation and the anion in Y.

cation = ______ anion = ______

Put the sample of $\mathbf{Y}$ in a boiling tube and use a measuring cylinder to add $8\text{ cm}^3$ of dilute nitric acid.

Record your observations.

Test the gas given off.

Describe the test and its result.

Identify the gas.

Keep the mixture for use in (b) and (c).

observations ______

test for gas and result ______

identity of gas ______

Use a measuring cylinder to transfer $2\text{ cm}^3$ of the mixture from (a) into a boiling tube.

Add aqueous sodium hydroxide drop by drop until a change is seen.

Then add more aqueous sodium hydroxide until a further change is seen.

Record your observations.

______

Use a measuring cylinder to transfer $2\text{ cm}^3$ of the mixture from (a) into a boiling tube.

Add aqueous ammonia drop by drop until a change is seen.

Then add more aqueous ammonia until a further change is seen.

Record your observations.

______

Identify the cation and the anion in $\mathbf{Y}$.

cation = ______ anion = ______

Tests on solution Z

Put $1\text{ cm}$ depth of $\mathbf{Z}$ into a boiling tube. Add $1\text{ cm}$ depth of aqueous sodium hydroxide. Gently warm the mixture.

Test the gas given off.

Describe the test and its result.

Identify the gas.

Keep the mixture for use in (f).

test for gas and result ______

identity of gas ______

Add $3\text{ cm}$ depth of dilute nitric acid to the mixture from (e).

Then add $1\text{ cm}$ depth of aqueous silver nitrate.

Record your observations.

______

Identify the cation and the anion in $\mathbf{Z}$.

cation = ______ anion = ______

Do the following tests on R and record your observations in the table.

Conclusion

The cation in R responsible for the observations in test 2 is ______.

Do the following tests on S and record your observations in the table.

Test and name any gas evolved.

Conclusions

The solid used to prepare solution S contains two cations and one anion.

Identify these ions.

cations ______ and ______

anion ______

Do the following tests on R and record your observations in the table.

Conclusion

The cation in R responsible for the observations in test 2 is ______.

Do the following tests on S and record your observations in the table.

Test and name any gas evolved.

Conclusions

The solid used to prepare solution S contains two cations and one anion.

Identify these ions.

cations = ______ and ______
anion = ______

Do the following tests on R and record your observations in the table.

Test and name any gas evolved.

Conclusion

A solid is used to prepare solution R.

The name of the solid is ______.

Do the following tests on S and record your observations in the table.

Test and name any gas evolved.

Conclusion

A solid is used to prepare solution S.

The name of the solid is ______.

Do the tests on R shown in the table.

Record your observations in the table.

Conclusions

Name the cation in R.

cation = ______

Name the anion in R.

anion = ______

Do the tests on S shown in the table.

Record your observations in the table.

Test and name any gases produced.

Describe the test and the positive result for any gases you named.

Conclusions

Name the cation responsible for the observations in test 1.

cation = ______

Name the cation responsible for the observations in test 3.

cation = ______

Name the anion in S.

anion = ______

Do the tests on R shown in the table.

Record your observations in the table.

Conclusions

Name the cation in R.

cation = ______

Name the anion in R.

anion = ______

Do the tests on S shown in the table.

Record your observations in the table.

Test and name any gases produced.

Describe the test and the positive result for any gases you named.

Conclusions

Name the cation responsible for the observations in test 1.

cation = ______

Name the cation responsible for the observations in test 3.

cation = ______

Name the anion in S.

anion = ______