本课配套习题挑战模式1/5
单选题
难度系数:
1.有3份等质量的小苏打,第1份直接与盐酸恰好完全反应;第2份首先加热,使其部分分解后,再与盐酸恰好完全反应;第3份首先加热,使其完全分解后,再与盐酸恰好完全反应。假若盐酸的物质的量浓度相同,消耗盐酸的体积分别为V1、V2和V3,则V1、V2和V3的大小关系正确的是
A: V1>V2>V3 |
B: V1>V3>V2 |
C: V2>V3>V1 |
D: V1=V2=V3 |
一次做对,真牛!
+5奖励规则>
- 提示1:5LuO6ZKg5YWD57Sg55qE6KeS5bqm6L+b6KGM6ICD6JmR44CC
- 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.把NaHCO3和Na2CO3·10H2O混合物6.56g溶于水制成100mL溶液,测得溶液中钠离子的浓度为0.5mol/L。向该溶液中加入一定量盐酸恰好完全反应,将溶液蒸干后,所得固体质量为
A: 2.93 g |
B: 5.85 g |
C: 6.56g |
D: 无法确定 |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u6LSo6YeP5a6I5oGS77yM5Y+N5bqU5ZCO5Ymp5L2Z55qE5Zu65L2T6YO95piv5LiO55uQ6YW45Y+N5bqU55Sf5oiQ55qE5rCv5YyW6ZKg44CC5qC55o2u6ZKg5YWD57Sg5a6I5oGS6L+b6KGM6K6h566X5Y2z5Y+v44CC
- 答案:QQ==
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本课配套习题挑战模式3/5
单选题
难度系数:
3.有关纯碱和小苏打的叙述正确的是
A: 等质量的Na2CO3、NaHCO3分别与足量稀盐酸反应,NaHCO3产生的CO2多 |
B: 等质量的Na2CO3、NaHCO3分别与足量的同种盐酸反应,NaHCO3消耗的盐酸多 |
C: 向NaHCO3溶液中滴入Ba(OH)2溶液无沉淀,而Na2CO3溶液中加入Ba(OH)2溶液出现白色沉淀 |
D: Na2CO3和NaHCO3都既能与酸反应,又能与氢氧化钠反应 |
一次做对,真牛!
+5奖励规则>
- 提示1:56Kz6YW45rCi5qC55LiO5rCi5rCn5qC557uT5ZCI77yM55Sf5oiQ56Kz6YW45qC55ZKM5rC077yb6ICM56Kz6YW45qC55LiN5LiO5rCi5rCn5qC55Y+R55Sf5Y+N5bqU44CC56Kz6YW46ZKg5LiO56Kx55qE5Y+N5bqU5piv5Zug5Li655Sf5oiQ5rKJ5reA44CC
- 答案:QQ==
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本课配套习题挑战模式4/5
单选题
难度系数:
4.18.6g NaOH和Na2CO3的固体混合物投入200ml 2.0mol·L-1的盐酸中恰好完全反应,不再产生气泡,则所得溶液中溶质的质量为多少
A: 25.8g |
B: 11.7g |
C: 23.4g |
D: 无法计算 |
一次做对,真牛!
+5奖励规则>
- 提示1:5pys6aKY5L6d5pen5qC55o2u5YWD57Sg55qE6LSo6YeP5a6I5oGS5Y2z5Y+v566A5Y2V5rGC5Ye65rq26LSoTmFDbOeahOi0qOmHj+OAgg==
- 答案:Qw==
5omA5b6X5rq25ray5Lit5rq26LSo5pivTmFDbO+8jOagueaNruawr+eahOWuiOaBkuWPr+efpe+8jE5hQ2znmoTotKjph4/kuLowLjLDlzLDlzU4LjU9MjMuNGc=
本课配套习题挑战模式5/5
单选题
难度系数:
5.把NaHCO3和Na2CO3·10H2O混合物6.56g溶于水制成100mL溶液,测得溶液中钠离子的浓度为0.5mol/L。向该溶液中加入一定量盐酸恰好完全反应,将溶液蒸干后,所得固体质量为
A: 2.93 g |
B: 5.85 g |
C: 6.56g |
D: 无法确定 |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u6LSo6YeP5a6I5oGS77yM5Y+N5bqU5ZCO5Ymp5L2Z55qE5Zu65L2T6YO95piv5LiO55uQ6YW45Y+N5bqU55Sf5oiQ55qE5rCv5YyW6ZKg44CC5qC55o2u6ZKg5YWD57Sg5a6I5oGS6L+b6KGM6K6h566X5Y2z5Y+v44CC
- 答案:QQ==
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