本课配套习题挑战模式1/5
单选题
难度系数:
1.强酸和强碱的稀溶液中和热可表示为:H+(aq)+OH-(aq)═H2O(l)△H=-57.3kJ/mol以下4个热化学方程式中,
①H2SO4(aq)+2NaOH(aq)=Na2SO4(aq)+2H2O(l)
②H2SO4(aq)+Ba(OH)2(aq)=BaSO4(s)+2H2O(l)
③NH3·H2O(aq)+HCl(aq)=NH4Cl(aq)+H2O(l)
④NH3·H2O(aq)+CH3COOH(aq)=CH3COONH4(aq)+H2O(l)
其中反应热为57.3kJ/mol的是
①H2SO4(aq)+2NaOH(aq)=Na2SO4(aq)+2H2O(l)
②H2SO4(aq)+Ba(OH)2(aq)=BaSO4(s)+2H2O(l)
③NH3·H2O(aq)+HCl(aq)=NH4Cl(aq)+H2O(l)
④NH3·H2O(aq)+CH3COOH(aq)=CH3COONH4(aq)+H2O(l)
其中反应热为57.3kJ/mol的是
A: ①② |
B: ③ |
C: ④ |
D: 均不符合 |
一次做对,真牛!
+5奖励规则>
- 提示1:5Y+N5bqU54Ot5Li6NTcuM2tKL21vbOaYr+W8uumFuOWSjOW8uueiseeahOeogOa6tua2suWPjeW6lOeUn+aIkDFtb2zmsLTmlL7lh7rnmoTng63ph4/vvIzkvp3mja7mpoLlv7XliIbmnpDliKTmlq3vvI4=
- 答案:RA==
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本课配套习题挑战模式2/5
单选题
难度系数:
2.已知:醋酸是弱酸,其电离过程的△H>0,而强酸与强碱的稀溶液发生中和反应的热效应:H+(aq)+OH-(aq)═H2O(l);△H=-57.3kI/mol,向1L0.5mol/L的NaOH溶液中加入下列物质:①稀醋酸;②浓硫酸;③稀硝酸,恰好完全反应时的反应热△H1、△H2、△H3的关系正确的是
A: △H1>△H2>△H3 |
B: △H1<△H3<△H2 |
C: △H1<△H2<△H3 |
D: △H1>△H3>△H2 |
一次做对,真牛!
+5奖励规则>
- 提示1:5by66YW45rq25LqO5rC05pS+5Ye654Ot6YeP44CC
- 提示2:5byx55S16Kej6LSo55qE55S156a75Li65ZC454Ot5Y+N5bqU44CC
- 答案:RA==
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
本课配套习题挑战模式3/5
单选题
难度系数:
3.已知H++OH-=H2O生成1molH2O放出热量57.3kJ,下列反应中放出57.3kJ热量的是
A: 1mol稀H2SO4与足量NaOH溶液反应 |
B: 稀盐酸与氨水反应生成1 molH2O |
C: 稀盐酸与稀Ba(OH)2溶液反应生成1 mol水 |
D: 稀NaOH与98.3%硫酸生成1 mol水 |
一次做对,真牛!
+5奖励规则>
- 提示1:5rOo5oSP5rWT6YW45ZKM5rWT56Kx55qE56iA6YeK5Lul5Y+K5byx55S16Kej6LSo55qE55S156a76YO95Lya5a+55Y+N5bqU55qE54Ot5pWI5bqU5Lqn55Sf5LiA5a6a55qE5b2x5ZON44CC
- 答案:Qw==
QeS4reeUn+aIkOeJqeawtOaYrzJtb2zvvIzkuI3mraPnoa7vvJs8YnI+QuS4reawqOawtOaYr+W8seeUteino+i0qO+8jOWtmOWcqOeUteemu+W5s+ihoe+8jOiAjOeUteemu+aYr+WQuOeDreeahO+8jOaJgOS7peaUvuWHuueahOeDremHj+imgeWwj+S6jjU3LjMga0rvvIzkuI3mraPnoa7vvJs8YnI+ROS4reehq+mFuOaYr+a1k+ehq+mFuO+8jOa6tuS6juawtOS8muaUvueDre+8jOWboOatpOaUvuWHuueahOeDremHj+Wkp+S6jjU3LjMga0rvvIzkuI3mraPnoa7jgII8YnI+5omA5Lul5q2j56Gu55qE562U5qGI5pivQ+OAgg==
本课配套习题挑战模式4/5
单选题
难度系数:
4.已知:H+(aq)+OH-(aq)=H2O(l)△H=-57.3kJ·mol-1。对于下列反应:
①HCl(aq)+NH3·H2O(aq)=NH4Cl(aq)+H2O(l)△H=-akJ·mol-1
②HNO3(aq)+KOH(aq)=KNO3(aq)+H2O(l)△H=-bkJ·mol-1 则a、b的大小关系为
①HCl(aq)+NH3·H2O(aq)=NH4Cl(aq)+H2O(l)△H=-akJ·mol-1
②HNO3(aq)+KOH(aq)=KNO3(aq)+H2O(l)△H=-bkJ·mol-1 则a、b的大小关系为
A: a>b |
B: b>a |
C: a=b |
D: 无法比较 |
一次做对,真牛!
+5奖励规则>
- 提示1:5pys6aKY6ZyA5YiG5p6Q5byx56Kx55qE55S156a75a+55Y+N5bqU54Ot5pWI5bqU55qE5b2x5ZON44CC5byx55S16Kej6LSo55qE55S156a75Li65ZC454Ot6L+H56iL
- 提示2:6L+Y6KaB5rOo5oSP6L+Z6YeM55qEYeOAgWLlnYfkuLrmlbDlgLzvvIzmsqHmnInnrKblj7fjgII=
- 答案:Qg==
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本课配套习题挑战模式5/5
单选题
难度系数:
5.下列说法正确的是
A: 中和热一定是强酸跟强碱反应放出的热量 |
B: 1 mol酸与1 mol碱完全反应放出的热量是中和热 |
C: 在稀溶液中,酸与碱发生中和反应生成1 mol H2O(l)时的反应热叫做中和热 |
D: 测定中和热时可用稀硫酸和稀Ba(OH)2溶液 |
一次做对,真牛!
+5奖励规则>
- 提示1:5pys6aKY6ICD5p+l55qE5piv5Lit5ZKM54Ot55qE5qaC5b+1LOWFs+mUruaYr+iusOa4healmuacieWFs+S4reWSjOeDreeahOmXrumimOOAgg==
- 答案:Qw==
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