Which of the following reactions can produce | vedclass

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(C) Generally,metals react with dilute acids to produce hydrogen gas. However,$HNO_3$ is a strong oxidizing agent and usually oxidizes $H_2$ to $H_2O$

Vedclass · Accepted Answer

$Mn +$ extremely dil. $HNO_3 (2\%)$

Vedclass · Answer

(C) Generally,metals react with dilute acids to produce hydrogen gas. However,$HNO_3$ is a strong oxidizing agent and usually oxidizes $H_2$ to $H_2O$. Extremely dilute nitric acid $(2\%)$ is an exception,as it is not a strong enough oxidizing agent to oxidize $H_2$. Therefore,the reaction is: $Mn + 2HNO_3 (	ext{extremely dil.}) 	o Mn(NO_3)_2 + H_2 \uparrow$.

List-$I$ (Type of hydride)	List-$II$ (Example)
$(A)$ Electron precise	$(i)$ $SiH_4$
$(B)$ Saline	$(ii)$ $H_2O$
$(C)$ Electron deficient	$(iii)$ $MgH_2$
$(D)$ Electron rich	$(iv)$ $B_2H_6$

Which of the following reactions can produce hydrogen gas?

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Match the following types of hydrides in List-$I$ with their examples in List-$II$.
List-$I$ (Type of hydride) List-$II$ (Example)
$(A)$ Electron precise $(i)$ $SiH_4$
$(B)$ Saline $(ii)$ $H_2O$
$(C)$ Electron deficient $(iii)$ $MgH_2$
$(D)$ Electron rich $(iv)$ $B_2H_6$

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