Question #34a5f

1 Answer
anor277
Jan 9, 2017

A mass of #"NaCl"# of #29.2*g# will result.

Explanation:

We need a stoichiometrically balanced equation. What does #"stoichiometric"# mean? Essentially, it means #"garbage in equals garbage out"#.

#Na(s) + 1/2Cl_2 rarr NaCl(s)#

The reaction unequivocally shows that each mole of natrium metal gives necessarily one mole of sodium chloride salt.

#"Moles of sodium"=(11.5*g)/(22.99*g*mol^-1)=0.500*mol#

And, therefore, AT MOST we can synthesize a mass of #0.500*cancel(mol)xx(22.99+35.45)*g*cancel(mol^-1)=29.2*g#.

What do the values #(22.99+35.45)*g*mol^-1# represent? From where did I get them?

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