Question

balance the chemical equation given below and calculate the number of molecules of CO2 gas when liberated and consuming of 3 moles of oxygen at STP.Cu2+O2-------Cu2O+SO2​

Answer 1

Answer:

Explanation:2cu2+2o2-------2cu20+o2

S will not come

Answer 2

The number of molecules of sulfur dioxide liberated are $1.2044\times 10^{24}$

Explanation:

We are given:

Moles of oxygen gas = 3 moles

A balanced chemical equation is defined as the equation in which total number of individual atoms on the reactant side is equal to the total number of individual atoms on product side.

For the given chemical equation, the balanced reaction follows:

$2Cu_2S+3O_2\rightarrow 2Cu_2O+2SO_2$

By​ Stoichiometry of the reaction:

3 moles of oxygen gas produces 2 moles of sulfur dioxide

According to mole concept:

1 mole of a compound contains $6.022\times 10^{23}$ number of molecules

So, 2 moles of sulfur dioxide gas will contain = $(2\times 6.022\times 10^{22}=1.2044\times 10^{24}$ number of molecules

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