How do you calculate equivalents in chemistry?
How do you calculate equivalents in chemistry?
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.
What is the formula of equivalent?
The equivalent masses of acids, bases, and salts are calculated as follows: Equivalent mass of an acid = molecular mass of the acid/basicity. Equivalent mass of a base = molecular mass of the base/acidity. Equivalent mass of a salt = molecular mass of the salt/total positive valency of metal atoms.
How do you find the number of equivalents?
It is calculated by dividing the molecular weight of solute by the number of equivalents per mole of solute (Equation 2). For acids, the number of equivalents per mole is the number of H+ ions contributed by the acid per mole of acid.
How do you calculate equivalent acids?
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.
What are equivalents in Chem?
An equivalent (symbol: officially equiv; unofficially but often Eq) is the amount of a substance that reacts with (or is equivalent to) an arbitrary amount (typically one mole) of another substance in a given chemical reaction. react with or supply one mole of electrons in a redox reaction.
What is the equivalent weight calculator?
Equivalent Weight Calculator
- Molecular Weight of Acid( M w )= K g.
- Basicity of Acid(B)=
- Equivalent Weight of Acid( E w )= k g.
- x =
What is an equivalent in chemistry?
An equivalent (symbol: officially equiv; unofficially but often Eq) is the amount of a substance that reacts with (or is equivalent to) an arbitrary amount (typically one mole) of another substance in a given chemical reaction. The mass of an equivalent is called its equivalent weight.
What are equivalents in chemistry?
An equivalent (symbol: officially equiv; unofficially but often Eq) is the amount of a substance that reacts with (or is equivalent to) an arbitrary amount (typically one mole) of another substance in a given chemical reaction.
How many equivalents are in 0.40 mole of K+?
The number of equivalents of the given amount of ion is 0.40 Eq. Explanation: In regards of an ion, the number of equivalents are the number of moles of an ion to neutralize the charge of opposite ion.
How much is an equivalent?
An earlier definition, used especially for chemical elements, holds that an equivalent is the amount of a substance that will react with 1 g (0.035 oz) of hydrogen, 8 g (0.28 oz) of oxygen, or 35.5 g (1.25 oz) of chlorine—or that will displace any of the three.
What is a example for equivalent?
The definition of equivalent is something that is essentially the same or equal to something else. An example of equivalent is (2+2) and the number 4. Since 2+2= 4, these two things are equivalent. To make equivalent to; to equal.
How to calculate number of equivalents?
The general number of equivalents formula is. E = MW/charge number . Where MW is the molecular weight of the compound and charge number is the number of proton- or hydroxide-equivalents the compound contains. Examples with different acids and bases help illustrate how this works in practice.
What are milliequivalents used for in chemistry?
A milliequivalent is a unit of measurement often used for electrolytes and it tells us the chemical activity of the species relative to 1 mg of hydrogen. The formula for converting to mEq/L is as follows:
What is the equivalent weight of H2SO4?
Answer: Concentration of H2SO4 = 98 g/litre Equivalent weight of H2SO4 = 49 thus, equivalent weight = 98/49
What are equivalent weights?
Equivalent weight. Equivalent weight (also known as gram equivalent) is the mass of one equivalent, that is the mass of a given substance which will combine with or displace a fixed quantity of another substance.
