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[主观题]
将10 g P2O5溶于热水,冷却至室温稀释至500 cm3,计算溶液的[H3O+],[H2PO4-],[HPO42-]和[PO43-]各
将10 g P2O5溶于热水,冷却至室温稀释至500 cm3,计算溶液的[H3O+],[H2PO4-],[HPO42-]和[PO43-]各是多少?
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