mass of Cl₂ = 11.947 g
Further explanation
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 :
[tex]\tt mol=\dfrac{30.5}{90.45}=0.337[/tex]
From equation , mol Cl₂ : mol NaClO₂ = 1 ; 2
mol Cl₂ = 0.337 : 2 = 0.1685
mass Cl₂
[tex]\tt 0.1685\times 70.9=11.947~g[/tex]
