This experiment is from the official website of Tianjin Agricultural College
Operation method
Experiments on the preparation of methane and the properties of alkanes
Materials and Instruments
Anhydrous NaAc Soda lime NaOH (s Br2∕CCl4 KMnO4 aq H2SO4 n-heptane Move 1. Preparation: 5 g NaAc (anhydrous), 3 g soda lime, 2 g NaOH (s), placed in a mortar and pestle in a rapid study of fine mixed with tinfoil wrapped into a cylinder, placed in a large rigid test tube, check the device is not leaking, with a small flame of the gas lamp Xu Xu uniformly heated the whole test tube, and then a larger flame strong heat near the mouth of the test tube of the reactant, so that the reactant reaction, and then gradually move the flame towards the bottom of the test tube. Gradually move the flame to the bottom of the test tube. After the air is estimated to be exhausted, collect methane by the drainage method and do the following experiments on its properties. Caveat 1. Drugs should be dry and waterless, operated quickly, prevented from absorbing moisture, and the device should be tightly closed. 2. Use concentrated sulfuric acid to pay attention to safety, to prevent burns, spilled on the counter and the ground. 3. The purpose of wrapping the drug with tinfoil: to prevent corrosion of the test tube, good heating effect4. Heating should be moved, from front to back, to prevent centralized heating and burning of the test tube. 5. After collecting the gas, disconnect the conduit between the sulfuric acid and the large test tube to prevent backsiphoning, and then extinguish the flame. 6. When the experiment is finished, pour the concentrated sulfuric acid into the waste bucket carefully. For more product details, please visit Aladdin Scientific website.
Rigid large test tubes Glass catheters Test tubes Glass sinks Large draw tubes Dropping funnels 9. tinfoil Glass rods Gas plugs Infrared lamps
2. properties:
Substitution reaction
Flammability