Essay about Experiment within the Decomposition of any Carbonate

Experiment on the Decomposition of a Carbonate

TARGET: To carry out a lab try things out to break down a carbonate using high temperature, also to handle appropriate checks for the formation of products due to this decomposition.

DISSCUSION: Carbonates are decomposed by temperature into the corresponding oxides and carbon dioxide. The temperature of decomposition depends upon the activity from the metal; in other words, the more energetic the material, the more secure is the carbonate. Thus, the carbonates of sodium and potassium are stable in the highest heat of a Bunsen burner flame, whereas the carbonates of silver and copper can be decomposed. Through this experiment water piping (ii) carbonate will be deconstructed at an increased temperature, developing copper (ii) oxide and carbon dioxide:

CuCO3(s) arrow CuO(s) + CO2(g)

You will test out for the formation of water piping (ii) oxide and carbon dioxide. Limewater is a sensitive test out for CO2, forming a distinctive milky medicine:

CO2(g) & Ca(OH)2(aq) arrow CaCO3(s) & H2O(l)


* excess fat Pyrex test tubes by 3

* medium Pyrex test pipes x 2

* holed stopper by 1

* bent cup delivery tube x one particular

* plastic tubing times 1

5. glass lines x 1

* retort stand times 2

* Bunsen burner x one particular

* Protection glasses x 1

5. Copper(ii) carbonate

* Limewater

* Copper(ii) oxide

2. 5ml of dilute H2SO4


1) Transfer a tiny quantity of CuCO3 equivalent to a depth of 1cm in a test tube

2) Clamp the test conduit at an angle of 45 deg and suit a stoppered delivery conduit. Immerse the final of the delivery tube right into a test conduit half-filled with limewater as shown inside the diagram.

3) Heat the test tube that contain the CuCO3 strongly for a few minutes right up until a colour change in the carbonate and lime water is observed

4) Record the observations from the changes developing to the CuCO3 and the limewater

Testing for copper(ii) o2

5) Permit the black powder (CuO) remaining in the check tube to cool

6) Add 5ml of dilute H2SO4 and warm softly with a Bunsen burner may...