论文部分内容阅读
学习化学理论要注意应用.通过应用,我们可以对一些问题认识得更加清楚,同时也能加深对理论的理解.下面分析几例平衡原理在元素化合物学习中的应用,希望达到抛砖引玉的目的.一、对一些氧化还原反应的理解例1 Br_2+SO_2+H_2(?)2HBr+H_2SO_4.把SO_2通入溴水中,由于在溴水中H_2SO_4的浓度为零,HBr的浓度很小,所以平衡强烈地向右移动;当增大H_2SO_4的浓度(氧化性增强)和HBr的浓度(还原性增强)时,平衡强烈地向左移动.因此Br_2或I_2的水
Learn the theory of chemistry should pay attention to the application through the application, we can know more clearly some of the problems, but also deepen the understanding of the theory.Considering the following analysis of several equilibrium principle in the study of elemental compounds, hoping to achieve the purpose of attracting valuable comments. , Some of the redox reactions understand Example 1 Br_2 + SO_2 + H_2 (?) 2HBr + H_2SO_4. The SO_2 into the bromine water, bromine water H_2SO_4 concentration is zero, HBr concentration is very small, so the balance of strong Right shift; when the concentration of H 2 SO 4 increases (oxidative enhancement) and the concentration of HBr (reduction enhances), the equilibrium moves strongly to the left, so that the water of Br 2 or I 2