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# Identify the correct descending order of equivalent weights:I) ${\text{Ag}}$II) ${\text{H}}$III) ${\text{Cu}}$IV) ${\text{Zn}}$A. I, IV, III, IIB.I,III,IV,IIC.I,II,IV,IIID.IV,II,III,I

Last updated date: 19th Jun 2024
Total views: 403.5k
Views today: 10.03k
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403.5k+ views
Hint: The equivalent weight of a solution is given as the molecular weight of the solute that is divided by the valency of the solute. Equivalent weight is used for calculating the mass of a substance in laboratory analysis, mostly titration.

Complete step by step answer:
We know that the formula of equivalent weight is given as,
$\therefore {\text{Equivalent}}\,{\text{weight}}\, = \,\dfrac{{{\text{M}}{\text{.W}}}}{{{\text{N}} - \,{\text{factor}}}}$
Here, ${\text{M}}{\text{.W}}$= molecular weight
${\text{N - Factor}}$= valency factor.
Now, we will calculate the equivalent weight of ${\text{Ag}}$,${\text{H}}$,${\text{Cu}}$and ${\text{Zn}}$.
We know that valency of silver is +1 and molecular weight is 108.
So, equivalent weight of${\text{Ag}} = \,\dfrac{{108}}{1} = 108$
We know that valency of zinc is +2 and molecular weight is 66.
So, equivalent weight of ${\text{Zn}} = \dfrac{{66}}{2} = \,33$
We know that valency of copper is +2 and molecular weight is 64
So, equivalent weight of ${\text{Cu}} = \dfrac{{64}}{2} = \,32$
We know that valency of hydrogen is +1 and molecular weight is 1.
So, equivalent weight of ${\text{H}}\, = \,\dfrac{1}{2} = \,0.5$
Therefore, the correct descending order of equivalent weights is ${\text{Ag}}\,{\text{ > }}\,{\text{Zn}}\,{\text{ > }}\,{\text{Cu > }}\,{\text{H}}$

So, the correct answer is Option A .

Note:
Students may get confused between molecular weight and equivalent weight. The molecular weight of a compound is calculated by adding the molar masses of all the constituent atoms. It is the mass of an element divided by the amount of the given substance. Equivalent weight is calculated by dividing the molecular weight by that of the valency.
The passage contains a chemistry question about determining the correct descending order of equivalent weights for given elements. The answer to the question is provided within the text.
single_question_with_answer
Given a text passage, determine:
    1. If it contains a mathematical question (including word problems or calculations)
    2. If an answer to that mathematical question is provided in the text

First, describe the content structure you found in 1-2 sentences.

Then provide your analysis in the following format:
TYPE: <one of the following values>
- NO_QUESTION
- SINGLE_QUESTION
- SINGLE_QUESTION_WITH_ANSWER
- MULTIPLE_QUESTIONS
- MULTIPLE_QUESTIONS_WITH_ANSWERS
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# Identify the correct descending order of equivalent weights:I) ${\text{Ag}}$II) ${\text{H}}$III) ${\text{Cu}}$IV) ${\text{Zn}}$A. I, IV, III, IIB.I,III,IV,IIC.I,II,IV,IIID.IV,II,III,I

Last updated date: 19th Jun 2024
Total views: 403.5k
Views today: 10.03k
Verified
403.5k+ views
Hint: The equivalent weight of a solution is given as the molecular weight of the solute that is divided by the valency of the solute. Equivalent weight is used for calculating the mass of a substance in laboratory analysis, mostly titration.

Complete step by step answer:
We know that the formula of equivalent weight is given as,
$\therefore {\text{Equivalent}}\,{\text{weight}}\, = \,\dfrac{{{\text{M}}{\text{.W}}}}{{{\text{N}} - \,{\text{factor}}}}$
Here, ${\text{M}}{\text{.W}}$= molecular weight
${\text{N - Factor}}$= valency factor.
Now, we will calculate the equivalent weight of ${\text{Ag}}$,${\text{H}}$,${\text{Cu}}$and ${\text{Zn}}$.
We know that valency of silver is +1 and molecular weight is 108.
So, equivalent weight of${\text{Ag}} = \,\dfrac{{108}}{1} = 108$
We know that valency of zinc is +2 and molecular weight is 66.
So, equivalent weight of ${\text{Zn}} = \dfrac{{66}}{2} = \,33$
We know that valency of copper is +2 and molecular weight is 64
So, equivalent weight of ${\text{Cu}} = \dfrac{{64}}{2} = \,32$
We know that valency of hydrogen is +1 and molecular weight is 1.
So, equivalent weight of ${\text{H}}\, = \,\dfrac{1}{2} = \,0.5$
Therefore, the correct descending order of equivalent weights is ${\text{Ag}}\,{\text{ > }}\,{\text{Zn}}\,{\text{ > }}\,{\text{Cu > }}\,{\text{H}}$

So, the correct answer is Option A .

Note:
Students may get confused between molecular weight and equivalent weight. The molecular weight of a compound is calculated by adding the molar masses of all the constituent atoms. It is the mass of an element divided by the amount of the given substance. Equivalent weight is calculated by dividing the molecular weight by that of the valency.
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The passage contains a chemistry question about determining the correct descending order of equivalent weights for given elements. The answer to the question is provided within the text.

TYPE: SINGLE_QUESTION_WITH_ANSWER