How much quantity of will have to be reacted with excess of dil. solution to produce sufficient for completely reacting with the obtained by decomposing of ?

Question

How much quantity of  will have to be reacted with excess of dil.  solution to produce sufficient  for completely reacting with the  obtained by decomposing  of ?

Canvas Classes · Accepted Answer

Strategy:
 This multi-step problem connects three separate reactions. Use the Principal of Equivalents to link the mass of  to the oxygen produced, then to the hydrogen required, and finally to the mass of Zinc needed to generate that hydrogen.

Step 1: Relate reactants via equivalents
Equivalents of .
- n-factor of 
- n-factor of  (since Cl changes from  to )

Step 2: Set up the equality

Actually, :

Step 3: Solve for mass of Zinc

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