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  • 15-11-2020
  • Chemistry
contestada

2. Calculate the new molanty of a solution formed when 20 ml of water is added to 100 ml of
0.2M NaOH​

Respuesta :

Neetoo
Neetoo Neetoo
  • 16-11-2020

Answer:

New molarity = M₂ = 0.167 M

Explanation:

Given data:

New molarity = M₂ = ?

Final volume = V₂ = 100mL + 20 mL = 120 mL

Initial volume =M₁ =  100 mL

Initial molarity =V₁ = 0.2 M

Solution:

M₁V₁       =    M₂V₂

0.2 M × 100 mL = M₂ × 100 mL

M₂ = 0.2 M × 100 mL/120 mL

M₂ = 20 M.mL/120 mL

M₂ = 0.167 M

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