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What is the concentration of bromide ion in a 25.0 ml sample of water if the addition of excess silver nitrate results in the precipitation of 361 mg silver bromide (fm = 187.777)?

Sagot :

The concentration or Molarity of bromide ion in the sample solution is 0.077 M.

What is molarity ?

  • A substance's molarity (M) is the volume of solution in which it is present.
  • The amount of a solute in moles per liter of a solution is known as molarity.
  • A solution's molar concentration is another name for molarity.
  • The secret to determining molarity is to keep in mind that it is measured in moles per liter (M).
  • Molarity is determined by:
  1. Count the moles of solute dissolved in the solution.
  2. Calculate the solution's volume in liters, and.
  3. Divide liters of solution by moles of the solute.

In the given question,

0.361 g AgBr × (1 mol AgBr/187.77 g AgBr) × (1 mol Br⁻/1 mol AgBr) × (80.0 g Br⁻/1 mol Br⁻) = 0.1536 g Br⁻

0.1536 × (1 mol Br⁻/80.0 g Br⁻) = 0.00192 mol

Molarity = 0.00192  mol/0.025 L = 0.077 M

Learn more about Molarity with the given link

https://brainly.com/question/8732513

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