Some commercial drain cleaners contain a mixture of sodium hydroxide and aluminum powder. When the mixture is poured down a clogged drain  ?

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Some commercial drain cleaners contain a mixture of sodium hydroxide and aluminum powder. When the mixture is poured down a clogged drain, the following reaction occurs:

 

2NaOH(aq) + 2Al(s) + 6H2O(l) → 2NaAl(OH)4(aq) + 3H2(g)

 

The heat generated in this reaction helps melt away obstructions such as grease, and the hydrogen gas released stirs up the solids clogging the drain. Calculate the volume of H2 formed at 28.5°C and 1.00 atm if 3.83 g of Al is treated with an excess of NaOH.

 

Some commercial drain cleaners contain a mixture of sodium hydroxide and aluminum powder. When the mixture is poured down a clogged drain, the following reaction occurs:

 

2NaOH(aq) + 2Al(s) + 6H2O(l) → 2NaAl(OH)4(aq) + 3H2(g)

 

The heat generated in this reaction helps melt away obstructions such as grease, and the hydrogen gas released stirs up the solids clogging the drain. Calculate the volume of H2 formed at 28.5°C and 1.00 atm if 3.83 g of Al is treated with an excess of NaOH.

 

1 Answer

  • Roger the Mole
    3 days ago

    (3.83 g Al) / (26.98154 g Al/mol) x (3 mol H2 / 2 mol Al) = 0.21292 mol H2

    V = nRT / P = (0.21292 mol) x (0.08205746 L atm/K mol) x (28.5 + 273.15) K / (1.00 atm) = 5.27 L

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