jose9177 jose9177
  • 22-07-2019
  • Chemistry
contestada

What volume of a 1.5 M KOH solution is needed to provide 3.0 moles of KOH?

Respuesta :

Edufirst
Edufirst Edufirst
  • 31-07-2019

Answer:

  • Volume = 2.0 liter of 1.5 M solution of KOH

Explanation:

1) Data:

a) Solution: KOH

b) M = 1.5 M

c) n = 3.0 mol

d) V = ?

2) Formula:

Molarity is a unit of concentration, defined as number of moles of solute per liter of solution:

  • M = n / V in liter

3) Calculations:

  • Solve for n: M = n / V ⇒ V = n / M

  • Substitute values: V = 3.0 mol / 1.5 M = 2.0 liter

You must use 2 significant figures in your answer: 2.0 liter.

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