In the following reactions,the total number of oxygen atoms in $X$ and $Y$ is $........$.
$Na_2O + H_2O \rightarrow 2 X$
$Cl_2O_7 + H_2O \rightarrow 2 Y$
$Na_2O + H_2O \rightarrow 2 X$
$Cl_2O_7 + H_2O \rightarrow 2 Y$
- A$4$
- B$5$
- C$3$
- D$2$
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Temperature of maximum density of $H_2O$ is $y \ K$ and $D_2O$ is $x \ K$. $(x-y)$ (in $K$) is nearly
Match the following:
List-$I$ (Reactions) List-$II$ (Methods) $A$. $Mg(HCO_3)_2 \rightarrow Mg(OH)_2 \downarrow + 2 CO_2 \uparrow$ $I$. Clark's method $B$. $M^{2+} + Na_4P_6O_{18}^{2-} \rightarrow [Na_2MP_6O_{18}]^{2-} + 2 Na^{+}$ $II$. Ion exchange method $C$. $Ca(HCO_3)_2 + Ca(OH)_2 \rightarrow 2 CaCO_3 + 2 H_2O$ $III$. Boiling $D$. $2 NaZ + Ca^{2+}_{(aq)} \rightarrow 2 Na^{+} + CaZ_2$ ($Z$ = Zeolite) $IV$. Calgon's method
| List-$I$ (Reactions) | List-$II$ (Methods) |
|---|---|
| $A$. $Mg(HCO_3)_2 \rightarrow Mg(OH)_2 \downarrow + 2 CO_2 \uparrow$ | $I$. Clark's method |
| $B$. $M^{2+} + Na_4P_6O_{18}^{2-} \rightarrow [Na_2MP_6O_{18}]^{2-} + 2 Na^{+}$ | $II$. Ion exchange method |
| $C$. $Ca(HCO_3)_2 + Ca(OH)_2 \rightarrow 2 CaCO_3 + 2 H_2O$ | $III$. Boiling |
| $D$. $2 NaZ + Ca^{2+}_{(aq)} \rightarrow 2 Na^{+} + CaZ_2$ ($Z$ = Zeolite) | $IV$. Calgon's method |
Write two reactions to explain the amphoteric nature of water.
Easy
View SolutionThe hardness-producing salt whose solubility in water decreases with a rise in temperature is
Easy
View SolutionHeavy water $(D_2O)$ freezes at $.........$ $^oC$.
Medium
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