Hydrogen is not obtained when zinc reacts wit | vedclass

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Question

(C) Zinc does not react with cold water to produce hydrogen gas. Zinc reacts with hot $NaOH$ solution to produce sodium zincate and hydrogen gas: $Zn

Vedclass · Accepted Answer

Conc. sulphuric acid

Vedclass · Answer

(C) Zinc does not react with cold water to produce hydrogen gas. Zinc reacts with hot $NaOH$ solution to produce sodium zincate and hydrogen gas: $Zn + 2NaOH 	o Na_2ZnO_2 + H_2$. Zinc reacts with dilute $HCl$ to produce zinc chloride and hydrogen gas: $Zn + 2HCl 	o ZnCl_2 + H_2$. Zinc reacts with concentrated sulphuric acid to produce zinc sulphate,sulphur dioxide,and water,not hydrogen gas: $Zn + 2H_2SO_4 	o ZnSO_4 + SO_2 + 2H_2O$. Therefore,hydrogen is not obtained when zinc reacts with concentrated sulphuric acid.

List-$I$ Type of Hydride	List-$II$ Example
$A$. Electron deficient hydride	$I$. $MgH_2$
$B$. Electron rich hydride	$II$. $HF$
$C$. Electron precise hydride	$III$. $B_2H_6$
$D$. Saline hydride	$IV$. $CH_4$

Hydrogen is not obtained when zinc reacts with

Similar Questions

Match List-$I$ with List-$II$

List-$I$ Type of Hydride List-$II$ Example

$A$. Electron deficient hydride $I$. $MgH_2$

$B$. Electron rich hydride $II$. $HF$

$C$. Electron precise hydride $III$. $B_2H_6$

$D$. Saline hydride $IV$. $CH_4$

Choose the correct answer from the options given below:

Which of the following substances will absorb oxygen rapidly?

Which of the following statements is correct?

Given below are two statements:
Assertion $(A)$: Protium and deuterium differ in their rates of reactions.
Reason $(R)$: They have different enthalpies of bond dissociation.
The correct answer is:

The hydride ion $H^{-}$ is isoelectronic with which of the following?

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