What is the formula for calculating equivalent weight?
Equivalent Weight = Molecular weight/ Valency Also, read: Chemical Reaction.
What is the formula of equivalent?
To calculate the Gram Equivalent Weight, we use the formula Eq = MW / n. Here we will learn how to calculate the Equivalent Weight Formula of a compound. If the mass of a chemical entity is g grams, then the given mass contains gram equivalents given by valency factor× moles.
How do you solve for equivalents?
To calculate the equivalent mass of a base, simply divide the molar mass of the base by the number of hydroxyl groups. Take, for example, calcium hydroxide Ca(OH)₂. A few simple calculations yield an equivalent of 37g/mol. To find the equivalent of an acid, divide the acid’s molar mass by the number of protons.
How do you find the equivalent weight of a tablet?
Eq wt = 388.48 g/[1(valence) × 1(number of charges)] = 388.48 g. mEq wt = 388.48 g/1000 = 0.38848 g = 388.48 mg. (250 mg per Tablet)/(388.48 mg per mEq) = 0.644 mEq of K+ per Tablet….
| Equation Factor | Numerical Value |
|---|---|
| b | 282 g/mole |
| d | 0.975 |
| e | 3 × 6.94 g/mole or 20.8 g/mole |
How do you find the equivalent weight of oxidant and reductant?
Equivalent weight of a substance (oxidant or reductant) is equal to molecular weight divided by number of electrons lost or gained by one molecule of the substance in a redox reaction.
What is normality and equivalent weight?
Normality is the number of equivalent weights, EW, per unit volume. An equivalent weight is the ratio of a chemical species’ formula weight, FW, to the number of its equivalents, n. EW=FWn.
What is the unit of equivalent weight?
The unit of equivalent weight is the atomic mass unit; the amount of a substance in grams numerically equal to the equivalent weight is called a gram equivalent. Hydrogen has atomic weight 1.008 (rounded to three decimal places) and always assumes valence 1 in compounds, so its equivalent weight is 1.008.
How do you calculate neutralization equivalent?
So, the solution will be neutralized when the number of moles of H+ equals the number of moles of OH-.
- Step 1: Calculate the number of moles of OH-.
- Molarity = moles/volume.
- moles = Molarity x Volume.
- moles OH- = 0.02 M/100 milliliters.
- moles OH- = 0.02 M/0.1 liters.
- moles OH- = 0.002 moles.
Why do we calculate equivalent weight?
Equivalent weight is used in the calculation of normality. The normality of a solution is defined as the number of gram equivalents of the solute present per litre of the solution. It is represented by the symbol, N.
What is gram equivalent weight of hydrogen peroxide as reductant?
The gram equivalent weight of hydrogen peroxide as reductant is 17g. Therefore, the equivalent weight is 152g .