Skip to main content
Ch.14 - Solutions
Tro - Chemistry: A Molecular Approach 6th Edition
Tro6th EditionChemistry: A Molecular ApproachISBN: 9780137832217Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoTro 6th EditionCh.14 - SolutionsProblema 58c
Capitolo 14, Problema 58c

An aqueous KNO3 solution is made using 55.3 g of KNO3 diluted to a total solution volume of 2.00 L. Calculate the mass percent of the solution. (Assume a density of 1.05 g>mL for the solution.)

Guida verificata passo dopo passo
1
Calculate the mass of the solution using its volume and density: \( \text{mass of solution} = \text{density} \times \text{volume} \).
Convert the volume from liters to milliliters: \( 2.00 \text{ L} = 2000 \text{ mL} \).
Calculate the mass of the solution: \( \text{mass of solution} = 1.05 \text{ g/mL} \times 2000 \text{ mL} \).
Use the formula for mass percent: \( \text{mass percent} = \left( \frac{\text{mass of solute}}{\text{mass of solution}} \right) \times 100\% \).
Substitute the mass of KNO3 (55.3 g) and the calculated mass of the solution into the mass percent formula to find the mass percent.

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
2m

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Mass Percent

Mass percent is a way of expressing the concentration of a solute in a solution. It is calculated by taking the mass of the solute, dividing it by the total mass of the solution, and then multiplying by 100 to get a percentage. This concept is essential for understanding how much of a particular substance is present in a given amount of solution.
Video consigliato:
Percorso guidato
00:38
Mass Percent Calculation

Density

Density is defined as mass per unit volume and is a critical property of substances. In this context, the density of the solution (1.05 g/mL) allows us to convert the volume of the solution into mass, which is necessary for calculating the mass percent. Understanding density helps in determining how much the solute contributes to the overall mass of the solution.
Video consigliato:
Percorso guidato
01:56
Density Concepts

Solution Preparation

Solution preparation involves dissolving a solute in a solvent to create a homogeneous mixture. In this case, KNO3 is the solute, and water is the solvent. Knowing how to prepare solutions and the relationship between mass, volume, and concentration is crucial for accurately calculating properties like mass percent in a solution.
Video consigliato:
Percorso guidato
01:39
Solution Components
Pratica correlata
Domanda del libro di testo

To what volume should you dilute 50.0 mL of a 3.00 M KI solution so that 25.0 mL of the diluted solution contains 2.55 g of KI?

Domanda del libro di testo

An aqueous KNO3 solution is made using 55.3 g of KNO3 diluted to a total solution volume of 2.00 L. Calculate the molality of the solution. (Assume a density of 1.05 g>mL for the solution.)

Domanda del libro di testo

A dioxin-contaminated water source contains 0.085% dioxin by mass. How much dioxin is present in 2.5 L of this water? Assume a density of 1.00 g/mL.

2095
views
2
rank
Domanda del libro di testo

An aqueous NaCl solution is made using 102 g of NaCl diluted to a total solution volume of 1.00 L. Calculate the mass percent of the solution. (Assume a density of 1.08 g>mL for the solution.)

Domanda del libro di testo

An aqueous KNO3 solution is made using 55.3 g of KNO3 diluted to a total solution volume of 2.00 L. Calculate the molarity of the solution. (Assume a density of 1.05 g>mL for the solution.)