What mass of chlorine is needed for the complete reaction of 30.5 g of NaClO2?

mass of Cl₂ = 11.947 g

The reaction equation is the chemical formula of reagents and product substances  

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation.

Reaction

2NaClO₂(s) + Cl₂(g)⇒2ClO₂(aq)+ 2NaCl(aq)

MW NaClO₂ = 90.45 g/mol

MW Cl₂ = 70.9 g/mol

mol of NaClO₂ :

From equation , mol Cl₂ : mol NaClO₂ = 1 ; 2

mol Cl₂ = 0.337 : 2 = 0.1685

mass Cl₂

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