Which pair of substances gives the same gaseo | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) For option $A$:$Ca + 2H_2O \rightarrow Ca(OH)_2 + H_2(g)$$CaH_2 + 2H_2O \rightarrow Ca(OH)_2 + 2H_2(g)$Both reactions produce hydrogen gas $(H_2)$

Vedclass · Accepted Answer

$Ca$ and $CaH_2$

Vedclass · Answer

(A) For option $A$:$Ca + 2H_2O \rightarrow Ca(OH)_2 + H_2(g)$$CaH_2 + 2H_2O \rightarrow Ca(OH)_2 + 2H_2(g)$Both reactions produce hydrogen gas $(H_2)$.For option $B$:$2Na + 2H_2O \rightarrow 2NaOH + H_2(g)$$2Na_2O_2 + 2H_2O \rightarrow 4NaOH + O_2(g)$These produce different gases ($H_2$ and $O_2$).For option $C$:$2K + 2H_2O \rightarrow 2KOH + H_2(g)$$2KO_2 + 2H_2O \rightarrow 2KOH + H_2O_2 + O_2(g)$These produce different gases.For option $D$:$Ba + 2H_2O \rightarrow Ba(OH)_2 + H_2(g)$$BaO_2 + 2H_2O \rightarrow Ba(OH)_2 + H_2O_2$These do not produce the same gaseous product.Therefore,the correct pair is $Ca$ and $CaH_2$.

Which pair of substances gives the same gaseous product when they react with water?

Similar Questions

$A$ plane passes through $(2,3,-1)$ and is perpendicular to the line having direction ratios $3,-4,7$. The perpendicular distance from the origin to this plane is

Changes in $GnRH$ pulse frequency in females is controlled by circulating levels of

The maximum value of $\frac{\log x}{x}, 0 < x < \infty$ is

$\lim _{x \rightarrow \infty}\left(\frac{x+6}{x+1}\right)^{x+4}$ is equal to

If the mean and variance of a binomial variate $X$ are $8$ and $4$ respectively,then $P(X < 3)$ equals to

Vedclass Test Series

Exam Paper Generator

Online Exam Module