High school chemistry experiment report
1 Weigh 4g NaOH, 5.85g NaCl
Use a measuring cylinder to measure the amount of distilled water in a beaker, stir and dissolve. Cool the glass rod and drain the liquid into a 1L volumetric flask. Then wash the beaker with distilled water, then drain it into the volumetric flask and cover the volumetric flask with a plastic dropper. Shake up and down, mix well
2 Leak test with standard solution and test solution rinsing burette Take potassium permanganate solution in acid burette, take oxalic acid in acid burette, and read the initial scale to transfer oxalic acid into the conical flask, in the conical flask Place the white paper on the bottom and drop the potassium permanganate solution into the Erlenmeyer flask in the correct way until the solution is slightly lavender. Physical Experiment Report·Chemical Experiment Report·Biological Experiment Report·Experiment Report Format·Experiment Report Template
3 Adding a small amount of NaOH solid to form a white precipitate is AlCl3
A small amount of Ba(OH)2 solid is added, and there is a colorless gas which can make the wet red litmus paper blue to be added with HCl. The white precipitate is insoluble (NH4)2SO4, and the precipitate is dissolved (NH4)2CO3.
4 Add the newly prepared chlorine water separately, shake it, add CCl4, and vortex to stand the layer. If the lower layer is brownish yellow, it is NaBr. If the lower layer is purple, it is NaI.
In the liquid separation, remove the layer of liquid and distill it to obtain Br2, I2.
5 Add concentrated sulfuric acid to scrap copper
Use a measuring cylinder to measure the amount of distilled water in a beaker, stir and dissolve. Cool the glass rod and drain the liquid into a 1L volumetric flask. Then wash the beaker with distilled water, then drain it into the volumetric flask and cover the volumetric flask with a plastic dropper. Shake up and down, mix well
2 Leak test with standard solution and test solution rinsing burette Take potassium permanganate solution in acid burette, take oxalic acid in acid burette, and read the initial scale to transfer oxalic acid into the conical flask, in the conical flask Place the white paper on the bottom and drop the potassium permanganate solution into the Erlenmeyer flask in the correct way until the solution is slightly lavender. Physical Experiment Report·Chemical Experiment Report·Biological Experiment Report·Experiment Report Format·Experiment Report Template
3 Adding a small amount of NaOH solid to form a white precipitate is AlCl3
A small amount of Ba(OH)2 solid is added, and there is a colorless gas which can make the wet red litmus paper blue to be added with HCl. The white precipitate is insoluble (NH4)2SO4, and the precipitate is dissolved (NH4)2CO3.
4 Add the newly prepared chlorine water separately, shake it, add CCl4, and vortex to stand the layer. If the lower layer is brownish yellow, it is NaBr. If the lower layer is purple, it is NaI.
In the liquid separation, remove the layer of liquid and distill it to obtain Br2, I2.
5 Add concentrated sulfuric acid to scrap copper
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