Compare the mass obtained from the mass predicted

Question

Discussion:

Thermal Decomposition

Calculate the following:

(a) Moles of malachite in 1g: Cu2CO3(OH)2

                          Cu= 63.55 x 2=127.1 C= 12.01 O= 16 x 5= 80 H=1.008 x 2= 2.016
(b) Moles of CuO produced:
.72 g CuO produced

(c) Ratio of moles of CuO produced per moles of malachite decomposed

3. Use the mole ratio of CuO produced per mole of malachite to write a balanced equation for the malachite decompositionreaction. Assume that CO₂ is also a product of the decomposition.

4. Predict the mass of CuO expected to result from the decomposition of the malachite, based on the balanced equation.

5. Compare the mass obtained from the mass predicted, and discuss reasons for any discrepancy.

6. Suggest a way to demonstrate that CO₂ is a product of the reaction.