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Sagot :
A weak acid ha has a ph of 5.0. if 1.0 mol of this acid and 0.1 mol of naoh were dissolved in one liter of wat,er The weak acid is partly neutralised by the alkali: HA(aq)+NaOH(aq)→NaA(aq)+H2O(l).
What is ph?
Chemistry uses a pH scale to categorize an aqueous solution's acidity or basicity. The term pH originally meant "potential of hydrogen." In comparison to basic or alkaline solutions (solutions with higher H+ ion concentrations), acidic solutions have lower pH values measured.
The p Hscale is logarithmic and inversely proportional to the amount of hydrogen ions present in the solution.
M is equal to mol dm3. At a temperature of 25 °C (77 °F), basic solutions are defined as those with a pH greater than 7, and acidic solutions as those with a pH lower than 7. Solutions having a pH of 7 are regarded as neutral at this temperature (e.g. pure water). Temperature affects the pH's neutral value, which drops to below 7 if the temperature exceeds 25 °C.
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