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为了更好地把握高考试题,现在把去年的高考题中电化学知识的相关考题总结如下:1.对原电池、电解池基本原理的考查1.1原电池原理例1.(2012年高考江苏化学10)下列有关说法正确的是A.CaCO3(s)=CaO(s)+CO2(g)室温下不能自发进行,说明该反应的△H<0B.镀铜铁制品镀层受损后,铁制品比受损前更容易生锈C.N2(g)+3H2(g)2N3(g)△H<0,其他条件不变时升高温度,反应速率V(H2)和氢气的平衡转化率均增大D.水的离子积常数Kw随着温度的升高而增大,说明水的电离是放热反应解析:本题的B选项是对原电池原理的简单考查。
In order to better grasp the entrance exam questions, the last year’s entrance exam questions related to electrochemical knowledge are summarized as follows: 1. The original battery, the basic principle of the electrolytic cell test 1.1 The principle of the original battery 1. (2012 college entrance examination Jiangsu Chemical 10 ) The following statement on the correct A.CaCO3 (s) = CaO (s) + CO2 (g) can not spontaneously at room temperature, indicating that the reaction △ H <0B plated copper plating product damage, the iron product ratio The rust is more likely to be rusted before being damaged. The increase of temperature, the reaction rate V (H2) and the hydrogen equilibrium conversion are all increased when the other conditions are not changed, such as C.N2 (g) + 3H2 (g) 2N3 Large D. Water ion constant Kw with increasing temperature increases, indicating that the ionization of water is exothermic Analysis: The B option is a simple examination of the principle of the original battery.