Iron, Fe, will reduce arsenic acid, H3AsO4, to produce highly poisonous arsine gas, AsH3, according to the following equation.     3 H3AsO4(aq)   +   8 Fe(s)   +   24 H+(aq)   ⟶   3 AsH3(g)   +   12 H2O(l)   +   8 Fe3+(aq)    Molar masses:  Fe = 55.85 g mol−1 ; H3AsO4 = 141.94 g mol−1   What mass of iron would be required to react with 590 mL of 0.700 mol L−1 H3AsO4(aq)?  Enter a mass accurate to 3 significant figures.

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Iron, Fe, will reduce arsenic acid, H3AsO4, to produce highly poisonous arsine gas, AsH3, according to the following equation.  

 

3 H3AsO4(aq)   +   8 Fe(s)   +   24 H+(aq)   ⟶   3 AsH3(g)   +   12 H2O(l)   +   8 Fe3+(aq) 

 

Molar masses:  Fe = 55.85 g mol−1 ; H3AsO4 = 141.94 g mol−1

 

What mass of iron would be required to react with 590 mL of 0.700 mol L−1 H3AsO4(aq)?  Enter a mass accurate to 3 significant figures.

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