配套习题- 碳酸钠和碳酸氢钠的比较——热稳定性 -【青果学院】

1/5单选题

难度：

1.下列有关Na₂CO₃和NaHCO₃性质的比较中，正确的是

A	等浓度的溶液中滴入稀盐酸，放出气体的快慢Na₂CO₃＜NaHCO₃
B	热稳定性Na₂CO₃＜NaHCO₃
C	常温时水溶性Na₂CO₃＜NaHCO₃
D	相对分子质量Na₂CO₃＜NaHCO₃

正确答案：QQ==

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

2/5单选题

难度：

2.加热纯碱和小苏打的混合物20克，至质量不再变化为止，冷却后称量其固体质量是13 .8克，则原混合物中纯碱的质量分数是

A	84%
B	8.4%
C	1.6%
D	16%

正确答案：RA==

PGltZyB3aWR0aD0zMjIgaGVpZ2h0PTgyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQ0IvMDYvckJBQ0psWXpFa2JBZmJXOEFBQUpJYTRMdmp3NzY1LnBuZyI+PGJyPuino+W+l++8mm09MTYuOGc8YnI+PGltZyB3aWR0aD0yNDAgaGVpZ2h0PTQ1IHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQ0IvM0UvckJBQ0oxWXpFa2FBb1NMYUFBQUYteEpycWxrMDg1LnBuZyI+

3/5单选题

难度：

3.将Na₂CO₃·1OH₂O和NaHCO₃的混合物ng溶于水制成200ml溶液，C（Na⁺）=0．5mol/L,若将混合物ng加热至质量不再改变时，减少质量可能为

A	3．1g
B	5．3g
C	9．0g
D	11．0g

正确答案：Qg==

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

4/5单选题

难度：

4.两种钠盐混合、分装于两只试管中．其中一支加热产生CO₂气体，另一支加水也产生CO₂气体．这两种盐可能是

A	Na₂CO₃和NaHSO₄
B	Na₂CO₃和NaHCO₃
C	NaHCO₃和NaHSO₄
D	NaHCO₃和Na₂SO₄

正确答案：Qw==

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

5/5单选题

难度：

5.碳酸氢钠受热容易分解为碳酸钠．现加热5.00g的碳酸钠和碳酸氢钠的混合物，使碳酸氢钠完全分解，混合物质量减少了0.31g，则混合物中碳酸钠的质量为

A	3.38 g
B	4.58 g
C	4.16 g
D	4.41 g

正确答案：Qw==

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