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Sagot :
The concentration of Ba(OH)₂ IS 0.287 M.
What is concentration?
This is the amount of solute in mol or in gram that will dissolve in 1 dm³ solution.
Equation of the reaction
- Ba(OH)₂+2HCl→ BaCl₂+2H₂O
Formula:
- CaVa/CbVb = Na/Nb................ Equation 1
Where:
- Ca = Concentration of HCl
- Va = Volume of HCl
- Cb = Concentration of Ba(OH)₂
- Vb = Volume of Ba(OH)₂
- Na = number of moles of HCl
- Nb = number of moles of Ba(OH)₂
Make Cb the subject of the equation
- Cb = (CaVaNb)/(NaVb)................... Equation 2
From the equation and the question,
Given:
- Ca = 0.394 M
- Va = 28.4 mL
- Vb = 19.5 mL
- Na = 2
- Nb = 1
Substitute these values into equation 2
- Cb = (0.394×28.4×1)/(2×19.5)
- Cb = 0.287 M.
Hence, The concentration of Ba(OH)₂ IS 0.287 M.
Learn more about concentration here: https://brainly.com/question/17206790
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