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[求助]
做合成,看文獻有句話不知道如何理解,還請大牛們給小白我指導一下。
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Sodium metasilicate (1 1 g, 50 mmol) is dissolved in 100 mL of water (Solution A). Sodium tungstate (182g, 0.55mol) is dissolved in 300mL of water in a separate1-L beaker containing a magnetic stirring bar. To this solution, 165mL of 4M HCI is added in 1-mL portions over 10min, with vigorous stirring (there is a local formation of hydrated tungstic acid that slowly disappears). 這段話中To this solution,165mL of 4M HCl is added in 1-mL portions over 10min, 如何理解???求助啊 |

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