搜索 - 科创

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钾盐和钠盐很多性质非常相似，在中学化学中通常认为钾盐和钠盐一样都易溶于水，但在大学化学阶段，有时就要注意钾盐和钠盐溶解度的差异了。钾离子半径比钠离子大，在钾离子与较大阴离子……好吧。。

稀氢氧化钠溶液的制备最为简单，纯碱和熟石灰的“苛化法”即可方便地制备10％左右的氢氧化钠溶液；稀盐酸可用较为安全的85％浓磷酸，与固体食盐混合后微热，将产生的氯化氢气体用冷水吸收即可得到稀盐酸，也很容易做到

====================还原铁粉 100g 10元锌粒 50g 5元过硫酸铵 20一瓶锂铍石订购硫酸锰整瓶25 分装 100g 10元碳酸锂碳酸锂 50g 10元钼酸钠

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