0.25 G Is Equivalent To

Question

One gm equivalent of a substance is nowadays in:

0.25 mole of ${\mathrm{O}}_2$

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0.5 mole of ${\mathrm{O}}_2$

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8.00 mole of ${\mathrm{O}}_2$

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1.00 mole of ${\mathrm{O}}_2$

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Solution

The right choice is A

0.25 mole of ${\mathrm{O}}_2$

Explanation for correct answers:

Option A 0.25 mole of ${\mathrm{O}}_2$

• The equivalent weight is the mass of one equivalent which is the mass of a given substance. volition combine with or displace a fixed quantity of some other substance.
• The formula to find the equivalent weight is $\mathrm{Equivalent}\mathrm{weight}=\frac{\mathrm{1000}.\mathrm{West}}{\mathrm{n}}$.
• Where, $\mathrm{MW}$ is the molecular weight of a substance and $\mathrm{due\; north}$ is the valency gene(number of electrons gained or lost by i atom of a compound).
• The molecular weight of Oxygen is $16\mathrm{chiliad}$ and the valency of oxygen is ii
• Thus the equivalent weight of oxygen is $\frac{\mathrm{sixteen}}{2}=8\mathrm{yard}$
• Mass of 0.25 mole of ${\mathrm{O}}_2$is $O_{\mathrm{two}}=0.25\times 32=\frac{32}{4}=\mathrm{viii}\mathrm{gm}$.
• The $8\mathrm{g}$ mass is represented by 0.25 mole of ${\mathrm{O}}_{\mathrm{two}}$, that is one gm equivalent of a substance is present in .25 mole of ${\mathrm{O}}_2$.
• Hence, Option A is correct.

Explanation for wrong answers:

Pick B 0.v mole of ${\mathrm{O}}_{\mathrm{ii}}$

• The equivalent weight of oxygen is $\frac{16}{2}=8\mathrm{one\; thousand}$
• Mass of 0.5 mole of ${\mathrm{O}}_{\mathrm{two}}$ is $O_2=0.5\times 32=\frac{32}{2}=16\mathrm{gm}$
• Hither the mass is non equal to the equivalent weight.
• Hence, Pick B is incorrect.

Option C viii.00 mole of ${\mathrm{O}}_2$

• The equivalent weight of oxygen is $\frac{16}{2}=8\mathrm{grand}$
• Mass of 8.00 mole of ${\mathrm{O}}_2$ is $O_2=\mathrm{viii}\times 32=256\mathrm{g}$
• Here the mass is non equal to the equivalent weight.
• Hence, Option C is incorrect.

Option D 1.00 mole of ${\mathrm{O}}_2$

• The equivalent weight of oxygen is $\frac{16}{2}=\mathrm{viii}\mathrm{thousand}$
• Mass of one.00 mole of ${\mathrm{O}}_2$ is $O_2=1\times 32=\frac{32}{1}=32\mathrm{g}$
• Here the mass is not equal to the equivalent weight.
• Hence, Option D is incorrect.

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0.25 G Is Equivalent To,

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