How does a solution of pH 7 compare to a solution of pH 10?
pH 7 has more OH- ions |
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pH 7 is more basic |
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pH 7 has a higher pH |
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pH 7 has more H+ ions When working with acids, which of the following is the proper way to dilute these chemicals?
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ANSWER
1
A solution of pH 7 compares to a solution of pH 10 by taking into
account the definition of pH.
pH is defined as the negative of the base 10 logarithm of the molar
concentration of hydrogen ions.
Hence a lower pH of pH7 will boast of a greater H+ ions
concentration than a higher pH of pH10.
In fact being a logarithmic scale, this value increases by a factor
of 10 for every 1 point on the pH scale.
pH 7 has more H+ ions
ANSWER
2
When working with acids, the proper way to dilute these chemicals
is to remember that adding water and acid releases a large amount
of heat. Hence adding water to acid would cause the excessive heat
produced to boil over the added water into an explosive rapid
gaseous phase expansion. The safer thing to do, is to:
Add the acid to water
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