What is the hydrogen concentration of a ph of 6.95, 7.25 and 8.1?

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  

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

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