Four students studied reactions of zinc and sodium carbonate with dilute hydrochloric acid and dilute sodium hydroxide solutions and presented their results as follows. The \[(\uparrow )\] shows evolution of gas and \[(-)\] shows no reaction. The right set is: | |||
(a) | \[Zn\] | \[N{{a}_{2}}C{{O}_{3}}\] | |
HCl | √ | √ | |
NaOH | √ | √ | |
(b) | \[Zn\] | \[N{{a}_{2}}C{{O}_{3}}\] | |
HCl | - | √ | |
NaOH | √ | √ | |
(c) | \[Zn\] | \[N{{a}_{2}}C{{O}_{3}}\] | |
HCl | √ | √ | |
NaOH | √ | - | |
(d) | \[Zn\] | \[N{{a}_{2}}C{{O}_{3}}\] | |
HCl | √ | - | |
NaOH | √ | √ |
Answer:
(c)
\[Zn\]
\[N{{a}_{2}}C{{O}_{3}}\]
HCl
√
√
NaOH
√
-
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