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2025-01-25 05:33 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 ers.
feeding order and raw material pare the exploration
According to 2:,2:2,2:,2: allocated proportion, is accepted after passing an examination the surface disposition acid sour copper and the sodium carbonate solution, joins in separately 8 test tubes, joins rapidly the sulfuric acid copper solutions in the sodium carbonate solution, vibrates about other constant temperature ten minutes as for 75 degrees Celsius water baths in, the inversion feeding order recreates one time, the observation has the precipitation speed, quantity how many and the color,
discovers the optimum condition.
exploration
According to the above optimum condition, takes the acid sour copper solutions and the sodium carbonate solution separately under 50, 75 and 100 degrees Celsius responded that, discovers the optimum temperature.
to 2, 3 step exploration optimum condition prepares the final product, and with the distilled water lavation, finally dries and calls heavily.(Enlarges ten times with conical flask to do)
The fourth:the experimental items
Instrument and material: The balance, the beaker, the glass rod, the Volumetric flask, the test tube, the filter flask,the Buchner funnel, the Erlenmeyer flask
Chemicals: Copper carbonate, sodium sulfate
The fifth:the experimental result
the step 2, the observation phenomenon optimum condition is equal to for the cupric sulfate pared to the sodium carbonate 2:, the feeding order for joins the sulfuric acid c
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