${M g}_{2} C_{3}$ $[X]$ is decomposed by $H_{2} O$ forming a gaseous hydrocarbon $[Y]$ . 8.4 g of $[X]$ gives _________ mol of $[Y]$ .

0.1

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

0.2

No worries! We‘ve got your back. Try BYJU‘S free classes today!

0.3

No worries! We‘ve got your back. Try BYJU‘S free classes today!

0.4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A 0.1
Solution:- (A) $0.1$
As we know that,
$No. of moles = \frac{Given weight}{Mol. weight}$
Weight of ${M g}_{2} C_{3} = 8.4 g$
Molecular weight of ${M g}_{2} C_{3} = 84 g$
Therefore,
No. of moles $= \frac{8.4}{84} = 0.1 mol$
Decomposition of ${M g}_{2} C_{3}$ by $H_{2} O$ -
${M g}_{2} C_{3} [X] + 4 H_{2} O ⟶ 2 M g {(O H)}_{2} + C_{3} H_{4} [Y]$
From the above reaction,
$1$ mole of ${M g}_{2} C_{3}$ gives $1$ mole of $[Y]$ .
Therefore,
$0.1$ mole of ${M g}_{2} C_{3}$ gives $0.1$ mole of $[Y]$ .
Hence $8.4 g$ of $X$ gives $0.1$ mole of $Y$ .

Suggest Corrections

Similar questions

Q. A gaseous hydrocarbon upon combustion gives

0.72

g of

H_{2} O

and

3.08

g of

C O_{2}

. The empirical formula of the hydrocarbon is :

If 8.4 g of element X includes $9.03 \times 10^{22}$ atoms and 0.1mol $X_{2} Y_{3}$ compound is 16g find the atomic mass of element Y. (Avogadro number is $6.02 \times 10^{23})$

Q. A hydrocarbon X on treatement with

O_{3}

followed by the reduction of ozonide with

Z n - H_{2}

O gives Y. Y gives both Tollen's test as well as yellow precipitate with

N a O H / I_{2}

solution. Which is a possible structure of X?

10

mL of gaseous hydrocarbon on combustion gives

40

mL of

C O_{2} g

and

50

H_{2} O

(vapour). The hydrocarbon is:

Q. A gaseous hydrocarbon gives upon combustion,

0.72 g

water and

3.08 g

C O_{2}

. The empirical formula of the hydrocarbon is:

Join BYJU'S Learning Program

Mg2C3 [X] is decomposed by H2O forming a gaseous hydrocarbon [Y]. 8.4 g of [X] gives _________ mol of [Y].

${M g}_{2} C_{3}$ $[X]$ is decomposed by $H_{2} O$ forming a gaseous hydrocarbon $[Y]$ . 8.4 g of $[X]$ gives _________ mol of $[Y]$ .