Skip to main content
Ch.9 Solutions
McMurry - Fundamentals of General, Organic, and Biological Chemistry 8th Edition
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoMcMurry 8th EditionCh.9 SolutionsProblema 60b
Capitolo 9, Problema 60b

Sodium thiosulfate (Na2S2O3) the major component in photographic fixer solution, reacts with silver bromide to dissolve it according to the following reaction:
AgBr(s) + 2 Na2S2O3(aq) → Na3Ag(S2O3)2(aq) + NaBr(aq)
b. How many mL of 0.02 M Na2S2O3 contain this number of moles?

Guida verificata passo dopo passo
1
Step 1: Start by identifying the number of moles of sodium thiosulfate (Na₂S₂O₃) required. This information should be given or calculated from part (a) of the problem. If not provided, refer to the stoichiometry of the reaction to determine the moles of Na₂S₂O₃ needed.
Step 2: Recall the formula for molarity (M), which is defined as the number of moles of solute divided by the volume of solution in liters: M=nV, where n is the number of moles and V is the volume in liters.
Step 3: Rearrange the formula to solve for the volume of the solution: V=nM. Here, V is the volume in liters, n is the number of moles of Na₂S₂O₃, and M is the molarity of the solution (0.02 M in this case).
Step 4: Substitute the known values into the formula. Use the number of moles of Na₂S₂O₃ from Step 1 and the molarity of 0.02 M to calculate the volume in liters.
Step 5: Convert the volume from liters to milliliters by multiplying by 1000, since 1 liter = 1000 milliliters. This will give you the final volume of the 0.02 M Na₂S₂O₃ solution required to contain the given number of moles.

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:
1m

Concetti chiave

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

Stoichiometry

Stoichiometry is the branch of chemistry that deals with the quantitative relationships between the reactants and products in a chemical reaction. It allows us to calculate the amount of substances consumed and produced in a reaction based on balanced chemical equations. Understanding stoichiometry is essential for determining how many moles of a reactant are needed to react with a given amount of another substance.
Video consigliato:
Percorso guidato
01:16
Stoichiometry

Molarity

Molarity is a measure of concentration defined as the number of moles of solute per liter of solution. It is expressed in moles per liter (M) and is crucial for calculating how much of a substance is present in a given volume of solution. In this context, knowing the molarity of sodium thiosulfate allows us to determine the volume required to achieve a specific number of moles.
Video consigliato:
Percorso guidato
00:53
Molarity

Chemical Reaction

A chemical reaction involves the transformation of reactants into products through the breaking and forming of chemical bonds. The reaction provided shows how sodium thiosulfate interacts with silver bromide to form a complex and sodium bromide. Understanding the specifics of this reaction, including the stoichiometric coefficients, is vital for calculating the amounts of reactants needed.
Video consigliato:
Percorso guidato
00:58
Chemical Reaction: Chemical Change Concept 1
Pratica correlata
Domanda del libro di testo

Nalorphine, a relative of morphine, is used to combat withdrawal symptoms in heroin users. How many milliliters of a 0.40% (m/v) solution of nalorphine must be injected to obtain a dose of 1.5 mg?

1113
views
Domanda del libro di testo

If you had only 23 g of KOH remaining in a bottle, how many milliliters of 10.0% (m/v) solution could you prepare? How many milliliters of 0.25 M solution?

2426
views
Domanda del libro di testo

An aqueous solution that contains 285 ppm of potassium nitrate (KNO3) is being used to feed plants in a garden. What volume of this solution is needed to prepare 2.0 L of a solution that is 75 ppm in KNO3?

1879
views
Domanda del libro di testo
What is an electrolyte?
3186
views
Domanda del libro di testo

What is the concentration of a NaCl solution, in (m/v)%, prepared by diluting 65 mL of a saturated solution, which has a concentration of 37 (m/v)%, to 480 mL?

2865
views
Domanda del libro di testo

How many moles of each substance are needed to prepare the following solutions?

a. 50.0 mL of 8.0% (m/v) KCl (MW = 74.55 g/mol)

b. 200.0 mL of 7.5% (m/v) acetic acid (MW = 60.05 g/mol)

967
views