Ch.3 - Molecules and Compounds

Tro - Chemistry: A Molecular Approach 5th Edition

Tro5th EditionChemistry: A Molecular ApproachISBN: 9780134874371Non è quello che usi tu?Cambia libro di testo

Tro 5th Edition

Ch.3 - Molecules and Compounds

Problema 75

Capitolo 3, Problema 75

Copper(II) fluoride contains 37.42% F by mass. Calculate the mass of fluorine (in g) in 55.5 g of copper(II) fluoride.

Guida verificata passo dopo passo

Step 1: Understand the problem. We are given that Copper(II) fluoride contains 37.42% F by mass. This means that in every 100 g of Copper(II) fluoride, there are 37.42 g of Fluorine.

Step 2: We are asked to find the mass of fluorine in 55.5 g of Copper(II) fluoride. To do this, we can set up a proportion. If 37.42 g of F is in 100 g of Copper(II) fluoride, then x g of F is in 55.5 g of Copper(II) fluoride.

Step 3: Set up the proportion as follows: (37.42 g F / 100 g CuF2) = (x g F / 55.5 g CuF2).

Step 4: Solve for x by cross multiplying and dividing. This will give you the mass of F in 55.5 g of Copper(II) fluoride.

Step 5: The value of x obtained in step 4 is the mass of fluorine in 55.5 g of Copper(II) fluoride.

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Mass Percent Composition

Mass percent composition is a way to express the concentration of an element in a compound, calculated as the mass of the element divided by the total mass of the compound, multiplied by 100. In this case, knowing that copper(II) fluoride contains 37.42% fluorine by mass allows us to determine the mass of fluorine in any given mass of the compound.

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Percorso guidato

00:38

Mass Percent Calculation

Stoichiometry

Stoichiometry is the area of chemistry that deals with the relationships between the quantities of reactants and products in chemical reactions. It allows us to use the mass percent composition to calculate the mass of a specific element in a compound, which is essential for solving the problem of finding the mass of fluorine in copper(II) fluoride.

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Percorso guidato

01:16

Stoichiometry Concept

Unit Conversion

Unit conversion is the process of converting a quantity expressed in one set of units to another set of units. In this context, it is important to ensure that the mass of copper(II) fluoride (55.5 g) is used correctly to find the mass of fluorine, applying the mass percent to convert from the total mass of the compound to the mass of the individual element.

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Percorso guidato

01:56

Conversion Factors

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