When analyzing a sample of bleach, its 3.50 g sample was ground with water and diluted to 250 ml. When titrating 25.0 ml of this solution, 36.50 ml of a 0.025 M solution of As2O3 went. What is the % active chlorine in the bleach sample? Titration reaction:
2CaOCl2+As2O3=2CaCl2+As2O5

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