Question

theoretical yield of copper II oxide

Part A Synthesis of copper (1) Bride from copper Appearance of copper wire. Observations after water is added to beaker Observations after NuoH is added to beaker Observations after heating 0.649 bendable, rose gold, thin brown fume, turning green, bubbling turned dear blue cloudy darker bive DICK sand like settled 10 botton 0.989 L 1,899 1.619 0.01 mote C 2o Mass filter paper Mass filter paper plus copper 110 oxide Mass copper (1) oxide collected Moles of copper Theoretical yield copper (10) okide Percent yield Calculations Mass of copper (IT) oxide collected Mass= 1899 0.289=1169 Of Copperli oxide Moles of copper Imole CV, - log c Molar Mass CV 20. o . more 1439 CULO 2.63.5=127 10. Ol more cu o 1 16 = 16 eoretical yield of copper (II) oxide ( yield of copper oxide: too. ent yield = experimental yield theoretical yield Synthesis and Decomposition of Copper (11) Oxide LAB 8 87 Valni ris and Decomposition of

Answer 1

Theoretical yield of copper (II) oxide:

  copper (II) oxide = CuO

The balanced equation for synthesis of CuO from Cu is

2Cu + O₂ ---------------> 2CuO  

Molar mass of Cu = 63.54 g/mol

Molar mass of CuO = 79.54 g/mol

Given that mass of copper wire = 0.64 g

Then,

  2Cu + O₂   ---------------> 2CuO

2 mol 2 mol

2 x 63.54 g/mol 2 x 79.54 g/mol

0.64 g ?

Then,

? = ( 0.64 g/ 2 x 63.54 g) x ( 2 x 79.54 g/mol )

= 0.8 g of CuO

Therefore,

Theoretical yield of copper (II) oxide = 0.8 g