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A chemist dissolves 793 of pure nitric acid in enough water to make up of solution. calculate the ph of the solution. round your answer to significant decimal places.

Respuesta :

bharathparasad577

pH of the given solution will be: 3

  • Since pH is essentially a measure of the concentration of hydrogen ions in a substance, the letters pH stand for potential of hydrogen.
  • pH less than 7 are acidic while pH greater than 7 are alkaline.
  • We can find out pH of a solution or substance by negative logarithm of H+ ions present in that solution.

Given,

mass of nitric acid is 773mg = 0.773g

Molar mass of nitric acid is 63.01 mol

volume of solution is 180dm³

First we will obtain the concentration of Nitric acid by formula n = CV

C is the concentration

V is the volume of the solution

mass of acid is already provided in the question

we know that

no. of moles = given mass / molar mass

no. of moles of nitric acid = 0.773 / 63.01 = 0.12

C = n/V

C = 0.12 / 180 = 0.0006

We can find out pH by negative logarithm of H+ ( concentration)

pH = - log [ H+ ]

pH = - log [ 0.0006 ]

pH = 3.22 = 3

Therefore, pH of the solution is 3 (acidic)

Learn more about pH here:

https://brainly.com/question/13557815

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