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The method of potassium hydrogen phthalate
The world has a method of seeking potassium hydrogen phthalate, and its method is well known. Potassium hydrogen phthalate is pure and stable, and is an important agent for measurement.
If you want to use potassium hydrogen phthalate, choose the first pure product. Looking at its color, it should be clean and free of impurities; looking at its shape, it should be uniform. Store it in a dry and cool place to avoid moisture and heat to prevent its qualitative change.
If you use it to map the concentration of lye, first accurately call it potassium hydrogen phthalate. Use a balance, adjust it to the right, take an appropriate amount of potassium hydrogen phthalate, and remember its weight. Then dissolve it in water, stir it slowly with a glass rod to promote its complete dissolution.
After the dissolution is completed, drop phenolphthalein as an indicator. Then slowly drop the lye until the solution is slightly reddish and does not fade at all, which is the end point. Remember the amount of lye, and calculate its concentration according to the chemical formula.
Use the method of potassium hydrogen phthalate, which must be fine. The weighing must be accurate, the operation must be stable, so that the number can be determined for all purposes.
The world has a method of seeking potassium hydrogen phthalate, and its method is well known. Potassium hydrogen phthalate is pure and stable, and is an important agent for measurement.
If you want to use potassium hydrogen phthalate, choose the first pure product. Looking at its color, it should be clean and free of impurities; looking at its shape, it should be uniform. Store it in a dry and cool place to avoid moisture and heat to prevent its qualitative change.
If you use it to map the concentration of lye, first accurately call it potassium hydrogen phthalate. Use a balance, adjust it to the right, take an appropriate amount of potassium hydrogen phthalate, and remember its weight. Then dissolve it in water, stir it slowly with a glass rod to promote its complete dissolution.
After the dissolution is completed, drop phenolphthalein as an indicator. Then slowly drop the lye until the solution is slightly reddish and does not fade at all, which is the end point. Remember the amount of lye, and calculate its concentration according to the chemical formula.
Use the method of potassium hydrogen phthalate, which must be fine. The weighing must be accurate, the operation must be stable, so that the number can be determined for all purposes.
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