Which of the following pairs will produce the | vedclass

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(C) Let us analyze the reactions with water for each pair:$1$. For $Na_2O$ and $Na$:$Na_2O + H_2O \rightarrow 2NaOH$$2Na + 2H_2O \rightarrow 2NaOH + H

Vedclass · Accepted Answer

$Na, NaH$

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(C) Let us analyze the reactions with water for each pair:$1$. For $Na_2O$ and $Na$:$Na_2O + H_2O \rightarrow 2NaOH$$2Na + 2H_2O \rightarrow 2NaOH + H_2(g)$The products are different ($H_2$ gas is produced in the second reaction but not the first).$2$. For $CO_2$ and $K_2O$:$CO_2 + H_2O \rightarrow H_2CO_3$$K_2O + H_2O \rightarrow 2KOH$The products are different.$3$. For $Na$ and $NaH$:$2Na + 2H_2O \rightarrow 2NaOH + H_2(g)$$NaH + H_2O \rightarrow NaOH + H_2(g)$Both reactions produce $NaOH$ and $H_2$ gas as products. Therefore,this pair produces the same products.

Compound	Molecular formula
$1$. Lime stone	$a$. $CaO$
$2$. Quick lime	$b$. $NaHCO_3$
$3$. Washing soda	$c$. $CaCO_3$
$4$. Baking soda	$d$. $Na_2CO_3 \cdot 10H_2O$

Which of the following pairs will produce the same products upon reaction with water?

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Match the following:

Compound Molecular formula

$1$. Lime stone $a$. $CaO$

$2$. Quick lime $b$. $NaHCO_3$

$3$. Washing soda $c$. $CaCO_3$

$4$. Baking soda $d$. $Na_2CO_3 \cdot 10H_2O$

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