Adding a catalyst as this would speed up the reaction and the rest would slow it down
A. Balances and graduated cylinders.
The reaction is
2Cu + S → Cu2S
So as per balanced given reaction we need one mole of sulphur over two moles of copper
Or
To react with one mole of sulphur we need two moles of copper
Thus we can say that the mole ration required for complete reaction will be
Cu : S = 2 : 1
As per the given problem the moles of each Cu and S are 3 moles
Thus for each three moles of given sulphur we need six moles of Cu to give three moles of Cu2S
However we have only three moles of copper available
So the limiting reagent is copper
It is going to decide the actual yield of reaction
The three moles of Copper will get completely utilized and only 1.5 moles of S will be used in the reaction making S an excess reagent
The moles of S left will be = 1.5 moles
moles of Cu2S formed = 1.5 moles
Electron
Atoms, compounds, and molecules undergo chemical reactions to form new substances. In general, reactions proceed to produce products which are have more stability.
These chemical reactions are possible because of the ability of substances to form chemical bonds with other substances. These formation of bonds are primarily attributed to electronic interactions (i.e. the valence or outer electrons of the atoms). of substances.
Atoms are able to form new substances by gaining, losing, or sharing electrons with other atoms.
