本课配套习题挑战模式1/4
单选题
难度系数:
1.298K时,各反应的平衡常数如下:
①N2(g)+O2(g) 2NO(g)K=1×10-30;
②2H2(g)+O2(g) 2H2O(g) K=2×1081(mol . L-1)-1;
③2CO2(g) 2CO(g)+O2(g)K=4×10-92mol.L-1 。
则常温下,NO、H2O、CO2这三个化合物分解放氧的倾向最大的是
①N2(g)+O2(g) 2NO(g)K=1×10-30;
②2H2(g)+O2(g) 2H2O(g) K=2×1081(mol . L-1)-1;
③2CO2(g) 2CO(g)+O2(g)K=4×10-92mol.L-1 。
则常温下,NO、H2O、CO2这三个化合物分解放氧的倾向最大的是
A: ① |
B: ② |
C: ③ |
D: 无法判断 |
一次做对,真牛!
+5奖励规则>
- 提示1:4pGg4pGh5Lik5Y+N5bqU5piv5YiG6Kej5pS+5rCn55qE6YCG5Y+N5bqU77yM6ZyA6KaB6L2s5YyW44CC
- 提示2:IOWwhuS4ieS4quWPjeW6lOeahOW5s+ihoeW4uOaVsOi/m+ihjOavlOi+g++8jEvlgLzovoPlpKfnmoTvvIzlrrnmmJPliIbop6PmlL7msKfjgII=
- 答案:QQ==
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
本课配套习题挑战模式2/4
单选题
难度系数:
2.吸热反应N2(g)+O2(g)2NO(g),在2000℃时,K=6.2×10-4。2000℃时,在10L密闭容器内放入2.94×10-3 mol NO、2.50×10-1 mol N2和4.00×10-2 mol O2,则下列说法正确的是
A: 此反应的初始状态为化学平衡状态 |
B: 此反应的初始状态为非化学平衡状态,反应将正向进行 |
C: 此反应的初始状态为非化学平衡状态,反应将逆向进行 |
D: 无法判断 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOagueaNruWQhOeJqei0qOeahOmHj+WPr+S7peiuoeeul+WHuuWIneWni+eKtuaAgeeahOWPjeW6lOWVhuOAgg==
- 提示2:IOWwhuWPjeW6lOWVhuS4juW5s+ihoeW4uOaVsEvmr5TovoPjgILoi6VRJmd0O0vvvIzlj43lupTpgIblkJHov5vooYzvvJvoi6VRJmx0O0vvvIzlj43lupTmraPlkJHov5vooYzjgII=
- 答案:Qw==
5Yid5aeL54q25oCB55qE5Y+N5bqU5ZWGPGltZyB3aWR0aD0xMTcgaGVpZ2h0PTQ5IHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNkUvNEEvckJBQ0oxVkFVM0tCUDU2S0FBQUVMX2s1Ti1BOTAwLnBuZyI+PGltZyB3aWR0aD0yNjMgaGVpZ2h0PTQ5IHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQTMvODQvckJBQ0UxVkFVM0xpbVFUeUFBQUdRdG01ME1zNjkzLnBuZyI+PGltZyB3aWR0aD04MyBoZWlnaHQ9MjMgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9BMy84NC9yQkFDRTFWQVUzS3pPQnBCQUFBQ2xWck1TdUk0MDUucG5nIj4mZ3Q7S++8jOWPjeW6lOWwhumAhuWQkei/m+ihjOOAgg==
本课配套习题挑战模式3/4
单选题
难度系数:
3.已知298.15 K时,可逆反应:Pb2+(aq)+Sn(s) Pb(s)+Sn2+(aq)的平衡常数K=2.2,若溶液中pb2+和Sn2+的浓度均为0.10 mol·L-1,则此时反应进行的方向是
A:向正反应方向进行 |
B:向逆反应方向进行 |
C:处于平衡状态 |
D:无法判断 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOagueaNruWQhOeJqei0qOeahOmHj+WPr+S7peiuoeeul+WHuuatpOaXtuWPjeW6lOeahOWPjeW6lOWVhuOAgg==
- 提示2:IOWwhuWPjeW6lOWVhuS4juW5s+ihoeW4uOaVsEvmr5TovoPjgILoi6VRJmd0O0vvvIzlj43lupTpgIblkJHov5vooYzvvJvoi6VRJmx0O0vvvIzlj43lupTmraPlkJHov5vooYzjgII=
- 答案:QQ==
5Yid5aeL54q25oCB55qE5Y+N5bqU5ZWGPGltZyB3aWR0aD04NSBoZWlnaHQ9NDggc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9GQS82RC9yQkFDRkZWQVU0REFIWVhfQUFBRG53WndBbXc4MzgucG5nIj48aW1nIHdpZHRoPTk0IGhlaWdodD00NSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0ZBLzZEL3JCQUNGRlZBVTREQTA4NVNBQUFDX0dqU0NuUTM4My5wbmciPj0xJmx0O0vvvIzlj43lupTlsIbmraPlkJHov5vooYzjgII=
本课配套习题挑战模式4/4
单选题
难度系数:
4.设反应①Fe(s)+CO2FeO(s)+CO(g)△H=akJ/mol.
反应②Fe(s)+H2O(g)FeO(s)+H2(g)△H=bkJ/mol,
以上两反应的平衡常数分别为K1和K2. 在不同温度下,K1、K2的值如下:下列有关叙述正确的是
反应②Fe(s)+H2O(g)FeO(s)+H2(g)△H=bkJ/mol,
以上两反应的平衡常数分别为K1和K2. 在不同温度下,K1、K2的值如下:下列有关叙述正确的是
T/K | K1 | K2 |
973 | 1.47 | 2.38 |
1173 | 2.15 | 1.67 |
A: b>0 |
B: 在973K下增大压强,K2增大 |
C: a>b |
D: 在常温下反应①一定能自发进行 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOS4jeWQjOa4qeW6puS4i++8jEs8c3ViPjE8L3N1Yj7pmo/muKnluqbljYfpq5jlop7lpKfvvIzor7TmmI7lj43lupTikaDmmK/lkLjng63lj43lupTvvIxLPHN1Yj4yPC9zdWI+6ZqP5rip5bqm5Y2H6auY5YeP5bCP77yM6K+05piO5Y+N5bqU4pGh5piv5pS+54Ot5Y+N5bqU44CC5q+U6L6D5aSn5bCP5pe26ZyA6KaB5rOo5oSP77yMYeOAgWLkuK3lkKvmraPotJ/lj7fjgII=
- 提示2:IOW5s+ihoeW4uOaVsOWPqumaj+a4qeW6puWPmOWMluOAgg==
- 提示3:IOWPjeW6lOiDveWQpuiHquWPkei/m+ihjOS+neaNruWPjeW6lOeahOeEk+WPmOWSjOeGteWPmOWGs+Wumu+8jOKWs0gtVOKWs1PvvJww6K+B5piO5Y+N5bqU6IO96Ieq5Y+R6L+b6KGM77yM4pazSC1U4pazU++8njDlj43lupTkuI3og73oh6rlj5Hov5vooYzvvIzikaDlj43lupTilrNTPTDvvIzilrNILVTilrNTPeKWs0jvvJ4w44CC
- 答案:Qw==
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