Calculating The Composition Of A Hydrate Youtube This video covers how to calculate the percentage composition of a hydrate. This video demonstrates how to calculate the percent water in copper (ii) sulfate pentahydrate by analysis of its chemical formula.subscribe: tinyur.
General Chemistry How To Calculate Hydrate Composition Youtube You can calculate the % by mass of h2o in a hydrate by:* calculating the molar mass of the entire compound (including water)* dividing the (contribution of w. This is a classic chem lab! it involves massing a compound, then heating it to remove water and then measuring its mass a second time. this can be approached in two different ways, calculating the percent of water in a hydrate from experimental data or analysis of a chemical formula. let's discuss experimental analysis first. let's say that you are given a hydrated salt we'll call y. its. The name of the compound is cobalt (ii) chloride hexahydrate and its formula is cocl2 ⋅ 6h2o cocl 2 ⋅ 6 h 2 o. the formula for water is set apart at the end of the formula with a dot, followed by a coefficient that represents the number of water molecules per formula unit. it is useful to know the percent of water contained within a hydrate. If we look up the molar masses of each on the periodic table, we find the following: 63.55 32.06 (4 x 16) = 159.61 grams per mole. divide the mass of your anhydrous (heated) salt sample by the molar mass of the anhydrous compound to get the number of moles of compound present. in our example, 16 grams 160 grams per mole = 0.1 moles.
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