Respuesta :
The pH of a solution that contains 1.32 grams of nitric acid dissolved in 750 ml of water is 1.55 .
What is pH of a solution ?
A pH is the measure of acidity or alkalinity of a solution .It has a range of 0 to 14 , where 0 to 6 means acidic , 7 is neutral and above 7 , 7-14 is basic range.
It is given that a solution contains 1.32 grams of Nitric Acid
Volume of water = 750ml = 0.750 l
pH = ?
Molecular weight of Nitric Acid = 63.01 g/mol.
mol = mass/Molecular weight
mol = 1.32/63.01
mol = 0.0209 mol
Molarity = moles of solute / Liters of solution
= 0.0209 / 0.750
= 0.02786M
H⁺ ions released when nitric acid is dissolved in water and the concentration = 0.02786 M
It is known that
pH = -log[H⁺]
pH = - log [0.02786]
pH = 1.55
Therefore , pH of a solution that contains 1.32 grams of nitric acid dissolved in 750 ml of water is 1.55 .
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