(D) The balanced chemical equation is: $Ca + 2H_2O \to Ca(OH)_2 + H_2$From the stoichiometry,$1 \ mol$ of $Ca$ $(40 \ g)$ produces $1 \ mol$ of $H_2$

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(D) The balanced chemical equation is: $Ca + 2H_2O \to Ca(OH)_2 + H_2$From the stoichiometry,$1 \ mol$ of $Ca$ $(40 \ g)$ produces $1 \ mol$ of $H_2$ gas.$1 \ mol$ of any gas at $STP$ occupies $22400 \ cm^3$.Given mass of $Ca = 8 \ g$.Moles of $Ca = \frac{8 \ g}{40 \ g/mol} = 0.2 \ mol$.Since $1 \ mol$ of $Ca$ produces $1 \ mol$ of $H_2$,$0.2 \ mol$ of $Ca$ will produce $0.2 \ mol$ of $H_2$.Volume of $H_2$ at $STP = 0.2 \ mol \times 22400 \ cm^3/mol = 4480 \ cm^3$.

Class 11 Chemistry Some Basic Concepts of Chemistry Chemical stoichiometry

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The reaction of calcium with water is represented by the equation $Ca + 2H_2O \to Ca(OH)_2 + H_2$. What volume of $H_2$ at $STP$ would be liberated when $8 \ g$ of calcium completely reacts with water? .......... $cm^3$

AIIMS 2010 All AIIMS

A
$0.2$
B
$0.4$
C
$2240$
D
$4480$

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Some Basic Concepts of Chemistry

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Chemical stoichiometry

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The reaction of calcium with water is represented by the equation $Ca + 2H_2O \to Ca(OH)_2 + H_2$. What volume of $H_2$ at $STP$ would be liberated when $8 \ g$ of calcium completely reacts with water? .......... $cm^3$

Similar Questions

The concentration of a $100 \ mL$ solution containing $X \ g$ of $Na_2CO_3$ (molecular weight $= 106$) is $Y \ M$. The values of $X$ and $Y$ are respectively.

The amount of $KMnO_4$ required to prepare $100 \ mL$ of $0.1 \ N$ solution in alkaline medium is ............... $g$.

If the density of methanol is $0.793 \ kg \ L^{-1}$,what volume is needed to prepare $2.5 \ L$ of a $0.25 \ M$ solution (in $mL$)?

The volume occupied by $4.4 \ g$ of $CO_2$ at $STP$ is ............... $L$.

$A$ solution of $20.2 \, g$ of $1,2$-dibromopropane in $MeOH$ upon heating with excess $Zn$ produces $3.58 \, g$ of an unsaturated compound $X$. The yield $(\%)$ of $X$ is closest to [Atomic weight of $Br$ is $80$].

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