选择题 等质量的铁与过量的盐酸在不同的实验条件下进行反应,测定在不同时间t产生氢气体积V的数据,根据数据绘制得到下图,则曲线a、b、c、d所对应的实验组别可能是( )。
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/uevqbhyqswx.jpg\" style=\"vertical-align:middle;\">
组别
| c(HCl)/mol·L-1
| 温度/℃
| 状态
|
1
| 2.0
| 25
| 块状
|
2
| 2.5
| 30
| 块状
|
3
| 2.5
| 50
| 块状
|
4
| 2.5
| 50
| 粉末状
|
A.4
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600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">3
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600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">2
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">1 B.1
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">2
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">3
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">4 C.3
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">4
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">2
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">1 D.1
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">2
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">4
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">3
选择题 等质量的铁与过量的盐酸在不同的实验条件下进行反应,测定在不同时间t产生氢气体积V的数据,根据数据绘制得到下图,则曲线a、b、c、d所对应的实验组别可能是( )。
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/uevqbhyqswx.jpg\" style=\"vertical-align:middle;\">
组别
| c(HCl)/mol·L-1
| 温度/℃
| 状态
|
1
| 2.0
| 25
| 块状
|
2
| 2.5
| 30
| 块状
|
3
| 2.5
| 50
| 块状
|
4
| 2.5
| 50
| 粉末状
|
A.4
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">3
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">2
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">1 B.1
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">2
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">3
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">4 C.3
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">4
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">2
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">1 D.1
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">2
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">4
![]()
600)makesmallpic(this,600,1800);\' src=\"http://www_php168_com/91files/2016060703/hsq54brunbp.jpg\" style=\"vertical-align:middle;\">3
本题答案：A
本题解析：其他条件一定时,溶液的浓度越大,化学反应速率越大;温度的升高和固体由块状变为粉末状都能显著增大反应速率。实验1的盐酸的浓度最小,反应的温度最低,所以化学反应速率最小;实验3的反应温度比实验2的反应温度高,所以反应速率实验3大于实验2;实验4浓度较大,温度较高,且为粉末状,故速率最大,反应最快,对应于a。
本题所属考点：【影响化学反应速率的因素】
本题难易程度：【一般】
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