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What is pH? a) The positive logarithm of the hydroxide ion concentration b) The positive logarithm of the hydrogen ion concentration c) The negative logarithm of the hydroxide ion concentration d) The negative logarithm of the hydrogen ion concentration?
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Most Upvoted Answer
What is pH? a) The positive logarithm of the hydroxide ion concentrati...
Option d is the right one because pH =-log(H+) whe where log is the base -10 logarithm and H + stand for the hydrogen ion concentration in units of moles per litre solution the term pH comes from the German word for 10th which means power combined with H the element symbol for hydrogen so pH is an abbreviation for power of hydrogen
Community Answer
What is pH? a) The positive logarithm of the hydroxide ion concentrati...
What is pH?

pH is a measure of the acidity or alkalinity of a solution. It indicates the concentration of hydrogen ions (H+) in the solution. The pH scale ranges from 0 to 14, with 7 being considered neutral. Values below 7 indicate acidity, while values above 7 indicate alkalinity. pH is an important concept in chemistry and biology, as it can affect various chemical reactions and biological processes.


Explanation:

a) The positive logarithm of the hydroxide ion concentration
This statement is incorrect. pH is not related to the hydroxide ion concentration.


b) The positive logarithm of the hydrogen ion concentration
This statement is correct. pH is defined as the negative logarithm (base 10) of the hydrogen ion concentration in a solution. The hydrogen ion concentration represents the acidity or alkalinity of the solution. The pH scale is logarithmic, meaning that a change of one unit on the pH scale corresponds to a tenfold difference in the concentration of hydrogen ions. For example, a solution with a pH of 3 has 10 times more hydrogen ions than a solution with a pH of 4.


c) The negative logarithm of the hydroxide ion concentration
This statement is incorrect. The negative logarithm of the hydroxide ion concentration is related to pOH, not pH. pOH is the measure of the alkalinity of a solution and is defined as the negative logarithm of the hydroxide ion concentration. pH and pOH are related by the equation pH + pOH = 14, which holds true for aqueous solutions at 25°C.


d) The negative logarithm of the hydrogen ion concentration
This statement is correct. pH is indeed the negative logarithm (base 10) of the hydrogen ion concentration. The negative sign indicates that pH is an inverse measure of acidity, where low pH values correspond to high hydrogen ion concentrations and high acidity, while high pH values correspond to low hydrogen ion concentrations and alkalinity.


In conclusion, the correct answer is b) The positive logarithm of the hydrogen ion concentration. pH is a measure of acidity or alkalinity, defined as the negative logarithm of the hydrogen ion concentration in a solution.
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Read the given passage and answer the questions:Metallic Character: The ability of an atom to donate electrons and form positive ions (cation) is known as electro-positivity or metallic character. Down the group, metallic character increases due to increase in atomic size and across the period, from left to right electropositivity decreases due to decrease in atomic size. Non-Metallic Character: The ability of an atom to accept electrons to form a negative ion (anion) is called non-metallic character or electronegativity. The elements having high electro-negativity have a higher tendency to gain electrons and form anion. Down the group, electronegativity decreases due to increase in atomic size and across the period, from left to right electro -negativity increases due to decrease in atomic size.Hydrogen is placed along with Alkali metals in the modern periodic table though it shows nonmetallic character

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What is pH? a) The positive logarithm of the hydroxide ion concentration b) The positive logarithm of the hydrogen ion concentration c) The negative logarithm of the hydroxide ion concentration d) The negative logarithm of the hydrogen ion concentration?
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What is pH? a) The positive logarithm of the hydroxide ion concentration b) The positive logarithm of the hydrogen ion concentration c) The negative logarithm of the hydroxide ion concentration d) The negative logarithm of the hydrogen ion concentration? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about What is pH? a) The positive logarithm of the hydroxide ion concentration b) The positive logarithm of the hydrogen ion concentration c) The negative logarithm of the hydroxide ion concentration d) The negative logarithm of the hydrogen ion concentration? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is pH? a) The positive logarithm of the hydroxide ion concentration b) The positive logarithm of the hydrogen ion concentration c) The negative logarithm of the hydroxide ion concentration d) The negative logarithm of the hydrogen ion concentration?.
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