Sodium (na) reacts with chlorine gas (cl2 ) to form sodium chloride (nacl) as shown in the equation: 2na + cl2 → 2nacl if 4 moles of chlorine gas react, how many moles of sodium will react?

Remark

The balance numbers in front of the chemicals tell you how to set up the proportion to solve your question

For every 2 moles Na only 1 mole of Cl2 is required.

Equation

2 moles Na:1 mole Cl2 :: x moles Na:4 moles Cl2

Solution

2/1 = x/4                 Cross multiply

2*4 = x*1

8 = x

Conclusion

8 moles of Na will be used. <<< Answer

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