Asalt could be formed by an alkali metal and a(n)?

Question

Chemistry: Asalt could be formed by an alkali metal and a(n)?

etampus0220 · Accepted Answer

8 moles of CaO produced from 4 moles O2.

Explanation:

Balanced chemical equation for the reaction:

2 Ca + O2 --> 2 CaO

Data given:

moles of O2 = 4

Moles of CaO =?

From the reaction it is seen that 1 mole of O2 is used in the reaction to produce 2 moles of CaO

hence, 4 moles of O2 will give x moles of CaO

$\frac{2}{1}$ = $\frac{x}{4}$

x =8

So, 8 moles of CaO will be produced when 4 moles of O2 will be used in the reaction. Since oxygen is the limiting reagent in the reaction.

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