He weighs a clean and dry crucible with its cover and records a mass of 18.456 g. The sample problem below demonstrates the procedure. (II) chloride is electrolyzed with a current of 10 amperes for 109 minutes (1 Faraday96,500 C Atomic mass of Co 59 u). 1 A student is given a cobalt (II) chloride hydrate. It is useful to know the percent of water contained within a hydrate. Claims of the formation of tri- and tetrahydrates have not been confirmed. mass of empty crucible (g) 54.000 mass of. Cobalt(II) chloride is an inorganic compound of cobalt and chlorine, with the formula CoCl 2.The compound forms several hydrates CoCl 2 n H 2 O, for n 1, 2, 6, and 9. Given the data collected in the table, what is the formula of the hydrate The molar mass of water is 18.015 g/mol and the molar mass of cobalt (II) chloride is 129.83 g/mol.
Using the initial mass of the substance (1. Suppose a student performs a similar experiment to determine the empirical formula of a cobalt (II) chloride hydrate. 102539 SupelcoCobalt(II) chloride hexahydrate CAS : EC Number: 231-589-4 Molar Mass: 237.90 g/mol Chemical Formula: ClCo 6 HO Hill Formula.
#Cobalt ii chloride formula mass trial
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. The videos below show two trials of heating a hydrate: Trial 1 is cobalt chloride hexahydrate (CoCl2 6H2 O) The water released during heat does not match the expected amount.
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