Science, asked by smahes604, 6 hours ago


For pure water, which of the following condition is valid at all
temperature?
pH =7
pH + pOH = 14

pH = pkw/2
pH - pOH = 7​

Answers

Answered by niverajesh2020
4

Answer:

The above given answer is wrong. Dont rely on it

The correct answer is pH = pKw/2

Explanation:

• pH for pure water = 7 at only 25ºC

• pH + pOH = 14 only at 25ºC

• pH = pKw/2  pfor pure water at all temperature

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Answered by syed2020ashaels
0

Answer:

For pure water, the valid condition at all temperatures is pH = pKw_{2}

Explanation:

  • pH is simply a measure of the acidity or basicity of any liquid.
  • Its range varies from 0 to 14.
  • pH = 7 means that the liquid is neutral (neither acidic nor basic).
  • pH less than 7 means that the liquid is acidic.
  • pH more than 7 means that the liquid is basic.
  • It is basically the measure of the amount of free hydrogen as well as hydroxyl ions in the liquid.
  • If a liquid has more free hydrogen ions, it is acidic.
  • On the other hand, if a liquid has more free hydroxyl ions, it is basic.
  • pH is an extremely significant indicator of water that is changing chemically because it can be affected by chemicals present in water.

We know that

  • the pH for pure water is 7 (at 25°C).
  • pH + pOH = 14 (at 25°C).
  • pH = pKw_{2} for pure water (at all temperatures).

Final Answer:

For pure water, the valid condition at all temperatures is pH = pKw_{2}.

#SPJ3

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