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1 实验用品试管、水槽、量筒。2 实验步骤ａ .用排空气法收集一试管氨气 ,用拇指堵住试管口 ,倒放在盛水的水槽中 ,放开拇指 ,当试管中液面不再上升时 ,再用拇指堵住试管口 ,从水中取出。ｂ .用量筒测量进入试管中液体的体积为Ｖ1 (即ＮＨ3的体积 ) ,再将试管盛满水 ,量出试
1 Laboratory supplies, sinks, cylinders. 2 Experimental procedure a. Collect ammonia gas in a test tube using air exhaust method. Block the test tube mouth with the thumb and pour it into a water-filled water tank. Release the thumb. When the liquid level in the test tube no longer rises, block it with the thumb. Test tube mouth, remove from water. b. The volume of the liquid in the test tube measured by the measuring cylinder is V1 (ie, the volume of NH3), and the test tube is filled with water and the test is performed.