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20. To neutralize 0.943 g of phosphorous acid H3PO3, 1,291 g KOH was consumed. Calculate the equivalent, equivalent mass and basicity of the acid. Based on the calculation, write the equation of the reaction.

Answer: 0.5 mol, 41 g / mol, 2.

Answer: 0.5 mol, 41 g / mol, 2.

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