Physics, 16.10.2019 00:00 Fuzez4934

He number of hydrogen ions would equal the number of hydroxide ions in a solution with a ph of

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Answer from: missmontgomery21

The number of hydrogen ions would equal the number of hydroxide ions in a solution with a pH of 7.

Explanation :

The substance’s acidic or basic nature is determined by its pH value which is the indication of the number of free hydrogen ion ( $H^{+}$ ). The pH value and the alkalinity can be measured by pH scale which varies from 0 to 14. Neutral water has the pH value of 7 with equal number of hydrogen ions ( $H^{+}$ ) and Hydroxide ions ( $O H^{-}$ ).

A substance with a pH value above than 7 is counted amongst the base whereas those with a pH value are counted amongst the acids. When a solution gets ten times more acidic, the pH value falls by the count of one.

There are various methods to determine the pH value of any substance and the most effective and quick one is the pH indicator paper. When the indicator paper is dipped in the water solution of the substance, it colour changes according to the different pH value. Another effective method to determine the pH value is the use of pH electrodes.

Answer from: Quest

the rearrangement of particles in a physical change. hope this

Answer from: Quest

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction

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