how to calculate pH? pls give a nice explanation and I will mark you brainliest...
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To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression: pH = - log [H3O+].
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Answer:
for this we litmus paper and see the colour of it you can conclude yourself I think you are intelligent in yourself litmus paper and put it on the object and see it the colour on the litmus paper will show what is its PH value
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