如图表示反应2SO2(g)+O2(g)2SO3(g) ∆H<0的正反应速率随时间的变化情况，试根据此曲线判断下列说法可能正确的是（）

题干

如图表示反应2SO₂(g)+O₂(g)

2SO₃(g) ∆H<0的正反应速率随时间的变化情况，试根据此曲线判断下列说法可能正确的是（）

A：t₁时减小了SO₂的浓度，增加了SO₃的浓度

B：t₁时降低了温度，平衡向正反应方向移动

C：t₁时减小了压强，平衡向逆反应方向移动

D：t₁时增加了SO₂和O₂的浓度，平衡向正反应方向移动

上一题下一题 0.0难度选择题更新时间:2017-12-11 04:35:01

答案(点此获取答案解析）

A

同类题5

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下短文。短文中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（∧），并在此符号下面写出该加的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1). 每处错误及其修改均仅限一词；

2). 只允许修改10处，多者（从第11处起）不计分。

Alice, my closest friend, devotes many energy to her lessons all day long. She is always one of the top student in our class. She loves the music so much that she made it a rule to enjoy some pop songs in her spare time. Alice is always willing to help other, and she often helps us with our lessons. As an enthusiastic volunteer, she has successful organized varieties of voluntary activities. We paid visit to a nursing home last month, so we picked up rubbish near our school. That we did was warmly welcomed by the staff in the home. Win honour for our school, Alice is admired by our classmates.

题干

答案(点此获取答案解析）

同类题1

同类题2

同类题3

同类题4

同类题5