Acid–Base Indicator
Calculate Acid–Base Indicator instantly with the exact formula and a worked example.
Acid–Base Indicator
Solution pH
pOH (at 25 °C)
5
Wednesday
Basic
[H⁺]
1.00e-9mol/L
Litmus
Blue
Methyl orange
Yellow
Methyl red
Yellow
Bromothymol blue
Blue
Phenolphthalein
Pink
More about: Acid–Base Indicator
What it calculates
The “Acid–Base Indicator” calculator computes pOH (at 25 °C) from 1 parameter: solution ph.
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters Solution pH = 9 the result is 5.
How to use
- Enter solution ph — each field above is adjustable with a slider.
- pOH (at 25 °C) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Acid–Base Indicator calculated?
The Acid–Base Indicator calculator computes pOH (at 25 °C) from solution ph. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Acid–Base Indicator calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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