NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

BIO MOLECULES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What does pH measure?
A
the amount of hydrogen (H+) ions
B
the amount of hydroxide (OH-) ions
C
amount of water
D
all of the above
Explanation: 

Detailed explanation-1: -pH is a measure of the hydrogen ion concentration in an aqueous solution. Essentially, pH measures acidity and alkalinity on a scale from 0.0 to 14.0. Pure water at room temperature (77° F) has a neutral pH, measuring 7.0.

Detailed explanation-2: -The pH of a solution is a measure of the molar concentration of hydrogen ions in the solution and as such is a measure of the acidity or basicity of the solution. The letters pH stand for “power of hydrogen” and numerical value for pH is just the negative of the power of 10 of the molar concentration of H+ ions.

Detailed explanation-3: -What does pH Measure? pH is the measurement of hydrogen ion activity.

Detailed explanation-4: -Yes, pH is a measure of the hydrogen ion concentration.

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