# In which of the following cases equivalent weight is half of the molecular weight?

## In which of the following cases equivalent weight is half of the molecular weight?

The equivalent weight of MnSO_(4) is half its molecular weight when it is converted to. If valency is 2, then equivalent weight will be equal to its molecular weight. Thus, when MnSO4 is converted into MnO2, then the valency factor is 2, and the equivalent weight of MnSO4 will be half of its molecular weight.

How do you find the molecular weight of h3po2?

66 g/mol
Hypophosphorous acid/Molar mass

### What is the relation between molecular weight and equivalent weight?

The key difference between gram molecular weight and gram equivalent weight is that the term gram molecular weight refers to the mass of a molecule in grams, which is numerically equal to the molecular weight of that substance, whereas the term gram equivalent weight refers to the mass of one equivalent in grams.

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How do you find the equivalent weight?

Equivalent Weight = Molecular weight/ Valency Also, read: Chemical Reaction.

## Why is equivalent mass determined and not molar mass?

We determine equivalent mass and not molecular mass because some acids have more available hydrogen ions than others. The KHP and acid samples must be dried so that their measured masses are actually proportional to the number of moles of each acid sample.

How do you find the equivalent weight of a reaction?

The equivalent weight is the molecular weight ( MM ) divided by the number of electrons transferred per mole of reactant ( n ). We need the moles of electrons, so let’s balance the equation by the ion-electron method. We see that 2 mol of electrons are transferred in the reaction.

### Which compound has same equivalent weight and molecular weight?

NaCl has the same equivalent weight and molecular weight.

How do you find the equivalent weight in a titration?

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Equivalent weights may be calculated from molar masses if the chemistry of the substance is well known: sulfuric acid has a molar mass of 98.078(5) g mol−1, and supplies two moles of hydrogen ions per mole of sulfuric acid, so its equivalent weight is 98.078(5) g mol−1/2 eq mol−1 = 49.039(3) g eq−1.

## Why is equivalent mass used?

The idea of equivalent mass to compare chemically different elements! Atoms combine with each other to form chemical compounds, such that the elements are always present in definite proportions by mass and this property can be used to make chemically different molecules with different mass, equal.

What is the equivalent mass of H3PO4 in H+?

For H 3 PO 4 (98 g/mol), it is capable of donating 3 H + ions so its equivalent mass is: So, normally, we would say that the equivalent mass of H 3 PO 4 is 32.66 g/mol H +. But that isn’t really what’s being asked here, is it?

### What is the n-factor when H3PO2 is converted to PH3?

Now, find the n-factor (total change in oxidation number per molecule) and then equivalent mass = molar mass/n-factor. So, when H3PO2 changes into PH3, oxidation state of phosphorous changes from +1 to -3 so as n-factor is 4.

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What is the change in the oxidation number of P?

The oxidation number of P changes from +1 to +3 and -3. Thus, the change in the oxidation number is 4. . Was this answer helpful?

## What is the equivalent mass of phosphorous in grams?

It is clear that phosphorous is losing and gaining 3 equivalents. Hence, its n-factor is 3. Therefore, equivalent mass of phosphorous is its molar mass / 3, which is 10.32 grams. 8 clever moves when you have \$1,000 in the bank. We’ve put together a list of 8 money apps to get you on the path towards a bright financial future.