Respuesta :
The barium hydroxide ([tex]Ba(OH)_{2}[/tex] which have concentration 0.001 m will have higher pH value.
What is concentration?
Concentration has been calculated by dividing a constituent's abundance through the mixture's overall amount. Mass concentration, molar concentration, integer concentration, as well as volume concentration are four different categories of mathematical description.
What is pH?
The pH scale determines how acidic or basic water is. The range is 0 to 14, with 7 representing neutrality. Acidity is indicated by pH values below 7, whereas baseness is shown by pH values above 7. In reality, pH is a measurement of the proportion of free hydrogen as well as hydroxyl ions in water.
pH can be calculated as :
pOH = -log [[tex]OH^{-}[/tex]]
The barium hydroxide can be ionized as:
[tex]Ba(OH)_{2}[/tex] → [tex]Ba^{2+} + 2OH^{-}[/tex]
The concentration = 2 × 0.001 m = 0.002m
The NaOH can be ionized as:
NaOH → [tex]Na^{+} + OH^{-}[/tex]
The concentration = 0.001m
It can be seen that as the concentration of OH ion increases pH value will also increases.
Therefore, barium hydroxide [tex]Ba(OH)_{2}[/tex] which have concentration 0.001 m will have higher pH value.
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