1- When Cu(OH)2 (s) is heated, copper(II) oxide and water are formed. write a ba

Question

1- When Cu(OH)2 (s) is heated, copper(II) oxide and water are formed. write a balanced equation for the reaction?

2- when sulfuric acid and copper(II) oxide are allowed to react, copper (II) sulfate and water are formed write a balanced equation for this reaction?

3- consider the combustion of methane, CH4:

CH4+2O2----CO2+2H2O

suppose 2.8 mol of methane are allowed to react with 5.0 mol of oxygen

A- What is the limiting reagent?

B- How many moles of CO2 can be made from this reaction? How many grams of CO2?

Explanation / Answer

1. Cu(OH)2(s)(heat) -----> CuO(s) + H2O(g)

2. H2SO4 (l) + CuO(s) -------> CuSO4(s)+ H2O(g)

3- consider the combustion of methane, CH4:

CH4+2O2----CO2+2H2O

A. 2.8 mol of methane needs 5.6 mole of oxygen. hence oxygen is limiting reagent

B . 2.8 mol of methane will form 2.8 mole of CO2 which is (2.8 x 44) 123.2 g of CO2

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