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Answer:
an aqueous solution of HNO3
✔ pH = 2.5
an aqueous solution of NaCl
✔ pH = 7
an aqueous solution of NaOH
✔ pH = 13
Explanation:
The answer is that the pH will be <7 , =7 , >7 for the respective solutions.
pH is an expression of hydrogen ion concentration in water.
pH is the negative logarithm of hydrogen ion (H+) concentration (mol/L) in an aqueous solution:
pH = -log₁₀(H+)
The term is used to indicate basicity or acidity of a solution on a scale of 0 to 14, with pH 7 being neutral.
As the concentration of H⁺ ions in solution increases, acidity increases and pH gets lower, below 7
When pH is above 7, the solution is basic.
For the above solutions mentioned
1. An aqueous solution of HNO3
This will be an acidic solution so
pH < 7
2. An aqueous solution of NaCl
As NaCl is a salt therefore , it will be a neutral solution
pH=7
3. An aqueous solution of NaOH
This will be an alkaline solution
pH>7
Therefore the pH will be <7 , =7 , >7 for the respective solutions.
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