问题 问答题 简答题

配置氢氧化钾(钠)溶液应采取何种保护措施?

答案

参考答案:配置氢氧化钾(钠)溶液应佩带防护眼镜、戴橡皮手套。

填空题

(14分)已知:通常状况下甲、乙、丙、丁为气体单质,A、B、C、D、E、F、G、H等为化合物,其中A、B、E、G均为气体,C为常见液体。反应①、②、③是工业制H的重要化工反应,反应④是重要的实验室制取气体的反应。有关的转化关系如下图所示(反应条件均已略去)。请回答下列问题:

(1)反应④的化学方程式为                                             

(2)B和E在一定条件下可发生反应,该反应具有实际意义,可消除E对环境的污染,该反应中氧化产物与还原产物的物质的量之比为                  

(3)在恒温恒压容器中加入一定量B,催化条件下发生反应B乙+丁(未配平),达平衡后再加少量B,则平衡       移动(填“正向”、 “逆向”或“不”),重新平衡后与原平衡相比,B的转化率       (填“增大”、 “减小”或“不变”)。

(4)常温下,物质的量浓度相同的A、B、D三者的水溶液,由水电离出的c(OH)大小顺序是(用A、B、D表示)                                            

(5)惰性电极电解A和D的混合溶液,可生成丁单质和一种二元化合物M(与甲、乙所含元素相同),M为三角锥形分子,该反应的方程式为                      。在碱性溶液中M与NaClO2(亚氯酸钠)按物质的量之比1∶6恰好反应可生成化合物B和消毒剂ClO2气体,该反应的离子方程式为                                   

(6)将Fe、FeO、Fe3O4的混合物二等分,其中一份加入1mol/L的A溶液100 mL,恰好使混合物全部溶解,且放出336mL(标况下)的气体,向所得溶液中加入KSCN溶液,溶液不变红;另一份混合物加入1 mol/ L 的H溶液,也恰好使混合物全部溶解,且向所得溶液中加入KSCN溶液,溶液也不变红,则所加入的H溶液的体积是        mL。

单项选择题

Why Men Explode
Although women get angry just as often as men, rage remains the prototypical male emotion. "My kids still talk about my ’freak-outs, ’" says Kim Garretson, 54, a corporate strategist in Minneapolis, who once erupted into volcanic fury; in a restaurant when served a still-frozen entree. "I didn’t express much of anything, but once in a while, I’d just blow."
Why do so many men lose their tempers "The rage comes because there’s so much frustration when you cut off something that is you. Yet that’s what men do, because they’re afraid that if you give emotions an inch, they’ll take a mile," says psychologist Kenneth W. Christian, PhD, author of Your Own Worst Enemy. "If you don’t learn how to work with your emotions, you’re a shadow figure, a small incomplete version of yourself. It’s only a matter of time until the house of cards that you are falls apart."
For Kim Garretson, that day came four years ago when he was diagnosed with prostate cancer. As often happens when illness strikes men, he realized he had nothing to lose, and everything to gain, by letting himself feel. "I’m no longer afraid of expressing almost any emotion," he says. "I get anger out with my quick, sharp tongue and move on. 1 use humor as an outlet, I’ve reconnected with old friends. 1 talk about the big questions of life. I search for spiritual meaning."
Guys, Try These
In his Dirty Harry days, Clint Eastwood never flinched. Now as a husband, father and Oscar-winning director of movies that explore the depths of men’s souls, the tough guy has turned tender — but not talkative. "The men who hide their emotions the most may, in fact be the most sensitive," observes Christian. Yet men can become more emotionally expressive without tears or fears. Here are some ways to start:
· Develop a creative outlet. Hobbies like painting or playing a musical instrument can tap into a man’s soul. Remember that much of the world’s greatest art, music and literature was created by the allegedly emotionally challenged sex.
· Release stress and anger through exercise. "When you get to the breaking point where you just want to put your head through a wall, taking a ten-minute time-out isn’t enough to calm down," says Westover, who in moments of extreme emotion finds a place to drop to the floor and do push-ups.
· Try expressing "a little" emotion. "Start with feelings you can control, find a sympathetic ear and use the term ’a little,’" suggests Coleman. Saying you feel "a little" sad or "a little" scared feels safer than a full declaration of vulnerability.
· Lean into the discomfort. "Rather than avoiding a feeling that you’re not sure how to handle, move toward it," says psychologist Travis Bradbury, PhD, co-author of The Emotional Intelligence Quick Book. "Learning to handle emotions takes time and practice, because you need to retrain your brain, but it does get easier."

Kim Garretson, a 54-year-old corporate strategist, once got very angry when______.

A.(A) diagnosed with lung cancer

B.(B) given a fake musical instrument

C.(C) dragged into a mountainous trip

D.(D) served cold food in a restaurant