A 20.0 mL solution containing 0.2 g impure reacts completely with 0.316 g of in acid solution. The purity of (in %) is

(mol. wt. of ; mol. wt. of )

Question

A 20.0 mL solution containing 0.2 g impure  reacts completely with 0.316 g of  in acid solution. The purity of  (in %) is

(mol. wt. of ; mol. wt. of )

Canvas Classes · Accepted Answer

Step 1 — Balanced reaction:

Step 2 — Moles of :

Step 3 — Moles of  (ratio 2:5):

Step 4 — Mass of pure :

Step 5 — Purity:

Answer: 85%

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