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A logarithm of a reciprocal.

For example, log(1/7) or log(7-1) = -log(7)

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Q: What is a negative logarithm?
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Is there a negative answer on logarithm?

Logarithms of numbers less than one are negative. For example, the logarithm of 1/2 will be negative.


Can base of a logarithm be negative?

no


How do you calculate - log 0.5?

The logarithm of a number less than 1 is negative. Therefore, -log 0.5 is the negative logarithm of 0.5 which is equal to -0.301.


What is the logarithm of -1?

Negative numbers don't have logarithms.


What is the pH of an aqueous solution with a H plus concentration of 1 X 10-3 M?

3: The negative of the logarithm (base 10) of the concentration. The logarithm of 1 is 0 and the logarithm of 10-3 is -3; the logarithm of their product is the sum of their individual logarithms, -3 in this instance, and the negative of -3 is +3.


Is it possible for a logarithm to equal a negative number?

Yes. The logarithm of 1 is zero; the logarithm of any number less than one is negative. For example, in base 10, log(0.1) = -1, log(0.01) = -2, log(0.001) = -3, etc.


What is the logarithm L of a number x if 0 is greater than x?

Within the real numbers, the logarithm of negative numbers is not defined.


How do you find a logarithm from a table?

You look the number up in a table.Example:Find the logarithm of 511From a table I see that numbers are only listed from 1.00 to 9.99I look up 5.11 and know that I have to multiply that by 100 or 102 to get my original value, which is equivalent to adding 2 to the table value.The table gives me 0.7084209 for the logarithm for 5.11The logarithm of 511 is thus 2.7084209For numbers less than 1 the logarithm will be negative!Negative numbers do have logarithms!


Is the pH of solution is the negative logarithm of its hydroxide ion concentration?

No, the pH of a solution is the negative logarithm of its hydrogen ion concentration, not its hydroxide ion concentration. The formula for pH is pH = -log[H+].


What are characteristics of pH?

pH is the negative logarithm of the hydrogen ion activity in a solution.


What value is ued to express the acidity or bacity of a solution called?

The acidity or basicity are expressed by pH (the negative logarithm of the activity of hydronium ion).


Why is there a minus sign on the definition of pH?

pH of a solution is the negative logarithm of the hydrogen-ion concentration