How do you calculate equivalent weight?
The procedure to use the equivalent weight calculator is as follows:
- Enter the molecular weight, valency value, and x for the unknown in the input field
- Now click the button “Calculate x” to get the result
- Finally, the equivalent weight value will be displayed in the output field
What is the meaning of “equivalent weight” and its formula?
While answering the question what is equivalent weight? you should keep in mind that its definition depends on the two factors; the molar mass and valency factor of the compound. Equivalent Weight. Equivalent weight = molecular weight / X. In the above formula X represents the valency factor. For Acids 1. Sulphuric Acid (H 2 SO 4)
What does equivalent weight mean?
Equivalent weight 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. The equivalent weight of an element is the mass which combines with or displaces 1.008 gram of hydrogen or 8.0 grams of oxygen or 35.5 grams of chlorine. ).
How much should I weigh calculator?
The Mifflin St. Jeor formula is the most accurate formula you can use to find your ideal weight. You need to know your height, weight and you can find your ideal body weight. Here you go: wt in pounds = m2 x ht (in inches) x 14.14 + m2 / 4. Let’s say you’re 5 feet, 8 inches tall, and you want to know how much you should weigh.
How do you calculate equivalent weight?
Equivalent Weight = Molecular weight/ Valency Also, read: Chemical Reaction.
How do you calculate equivalent weight of CaO?
Still, usually CaO reacts through 2 electron exchange mechanism, in other words, CaO, on dissociation, gives total cationic charge +2 and total anionic charge -2. Hence, in this case of calculating EW, you have to consider n=2 and so the EW of CaO is (40+16)/2=28.
How do you find the equivalent weight of an alloy?
As far as calculating the equivalent weight, all you do is take the percentage composition of each metal in the alloy, multiply that by the equivalent weight of the individual metal and add them all up.
What is equivalent weight ratio?
Equivalent weight is expressed as the ratio of atomic weight or molecular weight to the valence.
What is equivalent weight of NaOH?
Hence, the equivalent weight of NaOH is 40g/mol.
What is equivalent weight of NaCl?
The equivalent weight of NaCl is 58.5/1 or 58.5.
How do you calculate equivalent?
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 calculate equivalent weight of steel?
To find equivaent Weight,Take percentage composition available in SS 316L for Cr, Fe, Ni, Mo and other available etc.Multiply available percentage with equivalent weight of particular metal.Sum it all up.
Why do we use equivalent weight?
Equivalent weight is defined as the mass of one equivalent of a given substance that will combine with or displace a fixed quantity of another substance. It’s useful in chemistry because it can be used to make chemically different molecules with different mass equal.
What is equivalent weight example?
The equivalent weight of an element is its gram atomic weight divided by its valence (combining power). Some equivalent weights are: silver (Ag), 107.868 grams (g); magnesium (Mg), 24.312/2 g; aluminum (Al), 26.9815/3 g; and sulfur (S, in forming a sulfide), 32.064/2 g.
What is meant by 1 gram equivalent?
Gram equivalent mass is mass of one mole of element, molecule, ion divided by their valency or number of electrons shared. It’s generally defined for either salts or metals or ions or basically compounds/atoms/molecules which can form ions. For example, molar mass of AlCl3 is 133.34 g/mol.
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. The following simple relationship exists between normality, N, and molarity, M. N=n×M.
What is the equivalent weight of calcium oxide?
Appendix 2: Molecular and Equivalent WeightsNameFormulaEquivalent WeightCalcium BicarbonateCa(HCO 3) 281.0Calcium CarbonateCaCO 350.0Calcium HydroxideCa(OH) 237.0Calcium OxideCaO28.020 more rows
How do you find the equivalent weight of calcium?
Atomic number of Calcium is 20. Thus, it has 2 valence electrons as stated by Bohr’s electronic configuration i.e. 2, 8, 8, 2. The atomic weight of calcium is nearly 40 gm/mol. Thus, the equivalent weight of calcium metal is 20.
How do you find the equivalent weight of citric acid?
The equivalent weight of citric acid ( ) is 64.4 g. Also citric acid is a weak base and the basicity of citric acid is 3.
What is the N factor of CaO?
2CaO is a salt, so the n-factor of the salt is total positive charge on the cation or the total negative charge on the anion. Hence, n-factor of CaO is 2.
What is the Roman unit of weight?
Their basic unit of weight was the ‘uncia,’ from which the English word ‘ounce’ is originally derived. The uncia is a twelfth part of the ‘pes,’ which is the Roman ‘foot —’ our word inch is also derived from ‘uncia.’. The Romans used the same word for ounce, which they measured using a technique taken from the Arabs.
How much does a milliliter weigh?
The mass of 1 milliliter of water is approximately 1 gram. The mass of 1 liter of water is therefore approximately 1 kilogram. There are 1000 liters in a cubic meter, so the mass of 1 cubic meter of water is approximately 1000 kilograms or 1 metric ton. A US nickel weighs 5 grams, and a penny weighs 2.5 grams.
Why We Have Different Ways to Measure Weight?
Early Babylonian and Egyptian records, as well as the Bible, indicate that weight was originally measured by the capacities of containers such as gourds or clay or metal vessels. These were filled with plant seeds that were then counted to measure the volumes. With the development of scales as a means of weighing, seeds and stones served as standards. For instance, the “carat,” still used as a mass unit for gems, is derived from the carob seed.
How big is 1 hectare?
1 hectare is 10,000 square meters, equivalent to the area of a square 100 meters on a side. A football field is about 100 meters long, so imagine a square the length of a football field on each side, and that’s 1 hectare.
When was the British Imperial System of Weights and Measures first used?
This system of units was first defined in the British Weights and Measures Act of 1824, which was later refined and reduced. The system came into official use across the British Empire.
Is a kilogram a gram?
The kilogram is the weight of one liter of water. One thousandth of a kilogram is a gram. All multiples and submultiples of the base units are in powers of ten. Fractional units are not halves, but tenths, unlike the customary practice for fractions of inches, and derived units are related to the base units by multiples of powers of ten, unlike what is the case with twelve inches making a foot. Basing all units on multiples of ten makes conversion from one unit to another particularly easy.
What is equivalent weight calculator?
Equivalent Weight Calculator is a free online tool that displays the equivalent weight for the given molecular weight and valency value of a chemical reaction. CoolGyan’S online equivalent weight calculator tool performs the calculation faster, and it displays the equivalent weight in a fraction of seconds.
What is Meant by Equivalent Weight?
In chemistry, the equivalent weight of a chemical solution is defined as the ratio of the molecular weight of the solute to the valency of the solute. The equivalent weight of the substance will vary, and it depends on the types of reactions it undergoes. It is generally used to predict the mass of the substance which reacts with the one atom of hydrogen in the acid-base analysis. Also, the normality of the solution can be calculated using the equivalent weight. It means that the normality of the chemical solution is defined as the number of the equivalent weight of any substance dissolved in the one litre of solution. The formula to calculate the equivalent weight is given as:
How to convert g to kg?
To convert from g into units in the left column divide by the value in the right column or, multiply by the reciprocal, 1/x . 5000 g / 1000 [ (g) / (kg) ] = 5 kg.
How are conversions performed?
Conversions are performed by using a conversion factor. By knowing the conversion factor, converting between units can become a simple multiplication problem:
How to find the single factor of a factor?
Or, you can find the single factor you need by dividing the A factor by the B factor. For example, to convert from kilograms to pounds you would multiply by 1000 then divide by 453.59237. Or, multiply by 1000/453.59237 = 2.204622. So, to convert directly from kg to lb, you multiply by 2.204622.
What is equivalent weight in chemistry?
Equivalent weight in chemistry is the most common term used in solution and some basic concept of chemistry in the physical chemistry part. Here, we will have covered the important topics related to the equivalent weight of metal. What is the equivalent weight definition in chemistry?
What is the molecular weight of aluminium hydroxide?
The molecular weight of the aluminium hydroxide base is 78 g/mol.
What is the valency factor of aluminium cation?
The number of positive charge on aluminium cation is three . Therefore, its valency factor or X value will be three .
What is the molecular weight of sulphuric acid?
The molecular weight of sulphuric acid is 94.
What is the valency factor of a base?
For the base, X (valency factor) is the acidity. Acidity- Acidity is the number of hydroxyl ions or hydroxide ions released by a base. In the case of calcium hydroxide base Ca (OH)2. Ca (OH)2 →Ca+ + 2 OH-. The number of hydroxyl ions released by the calcium hydroxide base is 2.
How much weight can IBW calculate?
IBW formulas were developed mainly to facilitate drug dosage calculations. All of the formulas, have the same format of a base weight given a height of 5 feet, with a set weight increment added per inch over the height of 5 feet. For example, if you are a 5’10” male estimating your ideal weight with the Devine formula, you would add (2.3 × 10) kg to 50 kg to get 73 kg, or ~161 lbs.
How Much Should I Weigh?
Most everyone has at some point tried to lose weight, or at least known somebody who has. This is largely due to the perception of an “ideal” body weight, which is often based on what we see promoted through various media such as social media, TV, movies, magazines, etc. Although ideal body weight (IBW) today is sometimes based on perceived visual appeal, IBW was actually introduced to estimate dosages for medical use, and the formulas that calculate it are not at all related to how a person looks at a given weight. It has since been determined that the metabolism of certain drugs is more based on IBW than it is total body weight. Today, IBW is also used widely throughout sports, since many sports classify people based on their body weight.
What is the size of a medium boned wrist?
Medium boned = wrist size 6.5″ to 7.5″. Large boned = wrist size over 7.5″. A person who is large boned will naturally weigh more than someone who is small boned, even at the same height, making body frame size a factor that can affect measurements such as IBW and BMI.
Why do women weigh less than men?
This is because the male body generally has higher muscle mass, and muscle is heavier than fat. Not only that, but women generally have lower bone density.
What is the most widely used formula for the measurement of IBW?
The formulas differ in the values used based on the research of the scientists involved in their development, and their findings. The Devine formula is the most widely used formula for the measurement of IBW.
How much should I weigh to be healthy?
Thus far, there is no measure, be it IBW, body mass index (BMI), or any other that can definitively state how much a person should weigh to be healthy. They are only references, and it’s more important to adhere to making healthy life choices such as regular exercise, eating a variety of unprocessed foods, getting enough sleep, etc. than it is to chase a specific weight based on a generalized formula.
How much heavier should a male be than a female?
The taller the person, the more muscle mass and body fat they have, which results in more weight. A male at a similar height to a female should weigh about 10-20% heavier.
What is the ratio of a NCO to an OH group?
When the number of NCO groups is equal is to the number of OH groups, the result is a stoichioetric NCO : OH ratio of 1.0. A ratio of 1.0 is commonly known as the index.
Is formulas and definitions all applicable?
Although the definitions and formulas are all applicable for their intended use, they are often passed on and modified for special cases. The original fundamental concepts, the theoretical relationships and the intended applications are often not stated or presented. This inevitably has created confusion and misuse.
