Step-by-step explanation:
pH is use calculate the acidic strength of a substance ,
The value of pH is calculated as , negative log of the concentration of Hydrogen ions .
Therefore ,
pH = - log [ H ⁺]
rearranging the above equation , to find the hydrogen ion concentration . log [ H ⁺] = pH
log [ H ⁺] = - pH
[ H ⁺] = antilog ( - pH )
Hence , from the question , the hydrogen ions can be calculated by using the above equation ,
( 1 )
pH = 6.95
Since ,
[ H ⁺] = antilog ( - pH )
[ H ⁺] = antilog ( - 6.95 )
[ H ⁺] = 1.12 * 10 ⁻⁷
( 2 )
pH = 7.25
Since ,
[ H ⁺] = antilog ( - pH )
[ H ⁺] = antilog ( - 7.25 )
[ H ⁺] = 5.62 * 10 ⁻⁸
( 3 )
pH = 8.1
Since ,
[ H ⁺] = antilog ( - pH )
[ H ⁺] = antilog ( - 8.1 )
[ H ⁺] = 7.94 * 10 ⁻⁹