2023届普通高等学校招生考试预测押题卷(一)1化学(河北)试题答案

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13.将无水KCl-ACL,-CCL,低温熔盐体系置于电解槽中，控制电解槽中温不锈钢/石墨度为150℃，电流密度5~10A/dm2,电压为2.3V,电解得到金属铬，原熔融理如图所示。下列说法错误的是KCI-AICI-CrClA.电解需要在惰性气体氛围中进行离子交换膜B.不锈钢电极应接电源的正极C.石墨极反应为2C1-2eCl2↑D.电解总反应为2CrCl,电2C+3C,↑【解析】要在加热条件下得到金属铬，则需要在惰性气体氛围中进行，否则生成的铬会被氧化，A项正【答案】B确；在电解过程中不锈钢需做阴极，否则阳极不锈钢溶解，B项错误；石墨做阳极，溶液中C1放电生成C2,电极反应为2C-2e—C2↑，C项正确；阳极生成铬，故电解总反应为2CCL,电2Cr+3C12↑，D项正确。电解

第二节书面表达One possible version 1:Dear David,Glad to know that you are so keen on Chinese literature,I am more than willing to recommend my favoriteChinese novel-Journey to the West to you,which is one of the four great Chinese classical novels.Based on a true event occurring in China's Tang Dynasty,the novel tells of Monk Tang traveling to thewest.You're sure to be impressed by all the main characters,especially the brave and fearless Monkey King.Honestly speaking,I'm fascinated by the novel every time I read it.It gives me the strength to overcome theobstacles in life and pursue my dream bravely.I wish you would have fun and learn something through reading it.Best wishes,Li HuaOne possible version 2:Dear David,Delighted to know that you have strong passion for classical Chinese novels,I'm writing to recommendDream of the Red Chamber to you.The novel,one of the masterpieces of the Four Great Classical Novels in China,enjoys great popularity.Based on Jia and Lin's love story,it gives a vivid description of the rise and fall of a big family.By reading thebook,not only will you enjoy the unique charm of this traditional book,but you will also gain a better insightinto Chinese culture.I'm sure it will be a fantastic and unforgettable experience for you.I hope my recommendation will be of some help to you and you will have fun reading the book.Yours,Li Hua