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一、实验题(1、2、3题各8分,4题10分,共34分) 1.大棚种植蔬菜在冬季需补充二氧化碳,某同学在自家大棚内设计了补充二氧化碳的方法:将工业废硫酸用水稀释后,盛放在塑料桶内,悬挂在高处,每天向桶内加适量的碳酸氢铵,它和硫酸反应生成硫酸铵、二氧化碳和水。(1)写出该反应的化学方程式:__。(2)将塑料桶悬挂在高处的原因是__。(3)反应生成的硫酸铵在农村还可用作__。
I. Experimental Questions (8 points for questions 1, 2, and 3, and 10 points for 4 questions, a total of 34 points) 1. Vegetables in greenhouses need to be supplemented with carbon dioxide in the winter. A class of students designed carbon dioxide supplements in their own greenhouse: The spent sulfuric acid is diluted with water, placed in a plastic bucket and hung in a high place. The amount of ammonium bicarbonate is added to the barrel daily. It reacts with sulfuric acid to produce ammonium sulfate, carbon dioxide and water. (1) Write out the chemical equation of this reaction: __. (2) The reason for hanging the plastic bucket high is __. (3) The ammonium sulfate produced by the reaction can also be used as __ in rural areas.