### CHEM

Determination of equivalent weight of metal by hydrogen displacement method This method is used to determine the equivalent mass of those metals (Na, Zn,Al, and Mg) which readily displace hydrogen from an acid or from a base or water. Mg + 2 HCl ? MgCl2 + H2 Procedure:? In this method a known mass of metal m (g) is added to acid or base or

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### How do you calculate equivalent weight of compound

May 19, 2014To calculate the equivalent weight of a compound, simply add up the sum of equivalent weight of the ions. For example, Sodium chloride's equivalent weight can be express as 23/1 +35.5/1=58.5. It's unnecessary to multiple the numbers of ions.

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### How to Calculate a Chloride Equivalent for the Total

Step 2: Calculate Total Chlorine Emissions as a Chloride Equivalent. Convert the HCl and Cl. 2. results from Step 1 to a Cl(-) equivalent using Equation 2 Equation 2: Cl(-) Equivalent (ppmv) = HCl (ppmv) + [ 2 x Cl. 2. (ppmv) ] Alternative Calculation of a Cl(-l) Equivalent.

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### how do I calculate the volume of 0.450M Ba(OH)2 which will

Oct 22, 2013Best Answer: Start with a balanced equation.: Ba(OH)2 + 2 HCl --------------. BaCl2 + 2HOH. Convert the values of HCl given to moles. moles HCl = conc x vol so 0.25 x 0.046 L = 0.0115 moles. Now check the balanced equation. It tells you that for every 2 moles of

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### Equivalent Weight of Magnesium

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 g; magnesium (Mg), 24.312/2 g; aluminum (Al), 26.9815/3 g; sulfur (S, in forming a sulfide), 32.064/2 g

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### Preparing Standard Sodium Hydroxide Solution*

# of protons given 2 protons. Normality is the molecular weight divided by the grams per equivalent (all this results in the number of equivalents) in a given volume. For an 1 N solution we need 1 equivalent/liter. For hydrochloric acid (HCl) the equivalent weight is 36.46 grams.

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### Normality Calculator ( Making a solution of solid solute

The gram equivalent is the ratio of molecular weight and equivalence factor. This equivalence factor can be thought as the number of replaceable H + ions in a molecule of an acidic solute or the number of replaceable OH- ions present in a molecule of a basic solute. Thus equivalence factor of NaOH is 1 and 2 for H 2 SO 4. In the case of redox

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### how to calculate equivalent wt of Na2CO3 and NaHCO3

Mar 31, 2008Best Answer: For Na2CO3 there are two Na+ atoms to react with acids. Therefore in case of Na2CO3 equivalent weight is Molecular weight / 2. In the case of NaHCO3 there is only one Na+ to react with acids. (You can imagine that one Na of Na2CO3 has been used by an acid) Therefore equivalent weight

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### Normality

For example, a 2 M H2SO4 solution will have a Normality of 4N (2 M x 2 hydrogen ions). A 2 M H3PO4, solution will have a Normality of 6N. However, to make a solution of a predetermined normality requires a bit more calculating. First, you must determine the compound's equivalent mass.

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### how to find gram equivalent weight of sodium carbonate

Equivalent Weight = Molar weight of the Compound Charge on the Compound. So, Gram Equivalent Weight of CaCO3 = 100 2 = 50. The Brainliest Answer! The valence factor of a base is equal to its acidity. The acidity of a base is equal to how many hydroxyl ion (OH-) in its aqueous solution.

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### What is the meaning of equivalent weight and its formula?

By definition, equivalent weight is the mass of the substance that would react with 1g of hydrogen. Therefore you must divide the mass by 2 to get equivalent weight. In fact, this formula based definition of equivalent weight of an element is identical with the definition mentioned earlier in this answer.

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### how to calculate number of equivalents

For acids and bases which are dibasic/diprotic such as H2SO4, Ca(OH)2 the equivalent weight is half of the molar mass (formula weight in grams) eg a 1M solution is 2.0N (normal) For oxidation and reduction, the equivalent weight is related to the electrons (MnO4- + 8H+ + 5e- --- Mn2+ + 4H2O) the equivalent weight is 1/5 of the molar mass (formula weight in grams) eg a 1M solution is 5N (normal).

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### Isotonic calculation

Feb 20, 2011Example 2.5 Calculate the percentage of sodium chloride required to render a 0.5 per cent solution of potassium chloride iso-osmotic with blood plasma. Solution Sodium chloride equivalent of 0.5 per cent potassium chloride = 0.76 ∴ Percentage of sodium chloride for adjustment = 0.9 −

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### R.Shankar: Normality Calculation Based on Concentration

Sep 09, 20122. Equivalent Weight of the substance. 3. Puirity of the substance. For eg: Calculation of Hydrochloric Acid Normality: Sp. Gravity of HCl = 1.18; Equivalent weight = 36.45; Purity of HCl = 35% Specific Gravity of HCl x Purity of HCl x 1000 Normality of HCl = _____

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### Calculating Equivalent Weight of Epoxy Mixtures

Calculating Equivalent Weight of Epoxy Mixtures Most formulated products include mixtures of epoxy resins, diluents (reactive and unreactive), fillers, additives,. It is essential to determine the Epoxy Equivalent Weight (E.E.W.) of the mixture to determine proper stoichiometric ratios with the curing agent.

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### Equivalent (chemistry)

By this definition, an equivalent is the number of moles of an ion in a solution, multiplied by the valence of that ion. If 1 mol of NaCl and 1 mol of CaCl 2 dissolve in a solution, there is 1 equiv Na, 2 equiv Ca, and 3 equiv Cl in that solution. (The valence of calcium is 2, so for that ion you have 1 mole

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### How to calculate the equivalent weight of al2(so4)3

Equivalent weight is Molecular weight / Z Z is a number whose value depends on the chemical context of reaction For salts: Z is the oxidation or valence state of the ion. Al2(SO4)3 : molecular weight of Al2(SO4)3 : 2 X 27 + 3 X 32 + 2X 16 =342 for Al2(SO4)3, Z=6 because 2Al+3 is equivalent to 6 moles of H+. valence of Al2(SO4)3: 6 equivalent weight of Al2(SO4)3 : 342 / 6 = 57 1 mole Al2(SO4)3 is 342 gm

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### how to calculate equivalent weight of sodium bicarbonate

Feb 13, 2010The equivalent weight is the formula weight. Na2CO3 produces CO3[-2] (carbonate) anion that can react with two hydrogens so its equivalent weight is one half the formula weight. Equivalent weight = Formula Weight/)# of H that react with it. or. Equivalent weight =

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### Solved: 2. How Would I Calculate The Equivalent Weight Of

Question: 2. How Would I Calculate The Equivalent Weight Of Each Of The Following:a) KMnO4 Reduced To MnO2b) Ca(NO2)2 Oxidized To Nitratec) NaClO4 Reduced To Cl-3. How Would I Calculate The Normality If 2.994 G Of H2C2O4 * 2H2O Is Dissolved In 250.0 Ml Of Solution?4.

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### GC. Normality, equivalent weight, valance factors

Mar 07, 2010So equivalent weight of oxygen is 16/2 = 8 Valence factor #8211; How many electrons does an element need to be saturated, charge (with no sign), for example, valence factor for Hydrogen is 1, Oxygen is -2, and Al has +3 and H2SO4 has valence factors of #8211;

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### Molecular weight of Hydrochloric Acid

Finding molar mass starts with units of grams per mole (g/mol). When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula.

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### stoichiometry

Equivalent weight for CaO. Ask Question Asked 2 years, 8 months ago. Active 2 years, 8 months ago. Viewed 3k times -1 $begingroup$ I was wondering how I'd go around calculating the equivalent weight of CaO. From my knowledge, the EW of a compound is its (given mass )/(valence factor, n). How to calculate the equivalent weight of KMnO4?

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### ChemTeam: Converting between ppm and molarity

Problem #3: A solution is labeled 2.89 ppm and is made with a solute that has molar mass equal to 522 g/mol. What is the molarity of the solution? Solution (straight from Yahoo Answers): 1) Unless specified otherwise, ppm usually refers to ppm by weight: 2.89 ppm = 2.89 g per 1,000,000 g (or any other weight unit, I have just chosen g for convenience)

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### Normal Solution Concentration Calculator

EW is the equivalent weight in g/equivalent. 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.

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### how to calculate equivalent mass

HCl →H + + Cl-Therefore its equivalent mass would be. molar mass of HCl / 1 = 36.5/ 1= 36.5. H 2 SO 4 gives two moles of H + ions. H 2 SO 4 → 2H + + SO 4 2-Therefore its equivalent mass would be. molar mass of H 2 SO 4 /2 = 98/2 = 49. For salts, equivalent mass is defined as the mass of the substance that gains or accepts one mole of electrons in a reaction.

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### Experiment 8: ACID

2 SO 4. Its equivalent weight would be the mass of mole of H 2 SO 4. It has a numerical value that is half of that of its molar mass. For a base such as NaOH, it can react with one mole of H+. Therefore one mole of NaOH is one equivalent. For Ba(OH) 2, however, one equivalent is mol because it takes only half a mole to react with one mole of H+.

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### how to calculate equivalent wt of Na2CO3 and NaHCO3

Mar 31, 2008Therefore in case of Na2CO3 equivalent weight is Molecular weight / 2. In the case of NaHCO3 there is only one Na+ to react with acids. (You can imagine that one Na of Na2CO3 has been used by an acid) Therefore equivalent weight is Molecular weight / 1, or molecular weight itself.

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### How to determine the equivalent weight of carbon dioxide

Equivalent of COX2 = Equivalent of HX2COX3 which gives us the equivalent weight of COX2 to be 22 g / equivalent. Hence, the equivalent volume of COX2 at NTP is 11.2 L Now consider this another method. The equivalent weight of C in COX2 is 3 g / equivalent as

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### What is the equivalent weight of Na2S2O3

The equivalent weight is the gram molecular weight divided by the number of electrons lost or gained by each molecule; e.g., potassium permanganate (KMnO4) in acid solution, 158.038/5 g; potassium dichromate (K2Cr2O7), 294.192/6 g; and sodium thiosulfate (Na2S2O35H2O),

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### Molarity and Normality Flashcards

Equivalent weight: amount of replaceable H+ or OH− ion or charge for the element or compound Usually reflected by the valence of the element or compound (see Table 5-2) Calculated by dividing the gram molecular weight of an element or compound by the valence

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