jassylovee
9

Does anyone know What does pH= ?

kearalacy

if i am not mistake u can use -log[concentration of oh-] to find it ie -log[6.4*10^-10]=9.19

sarahwilson304

Answer:  Yes.  The pH = 7.6   . ___________________________________________________ Explanation: ____________________________________________________ pH = - log [H⁺]   ; in which, by convention, we assume that there                             is an implied "base 10" if there is no number listed as a                             "base" under the "log" sign; i.e. , " pH = - log [H⁺]⁺ = - log₍₁₀₎ [H⁺] ; ________________________________________________ in which, the:  " [H⁺] " refers to the concentration of hydrogen ions, or " H⁺ " ; in "Molarity" ; that is:  "moles of solutes per Liters of solution", or "mol / L", or "M" . ________________________________________________ Likewise, "pOH = - log [OH⁻] =  - log₍₁₀₎ [OH⁻] " . ________________________________________________   Note:  pH  + pOH = 14 . ________________________________________________ So, given:  "A solution with 6.4 * 10⁻¹⁰ M  OH (in our problem), find the "pH". _________________________________________________    The pOH of the solution is 6.4 . _________________________________________________ Since pH + pOH = 14 ;                 we can substitute "6.4" for "pOH" ; and solve for "pH": _________________________________________________       pH + 6.4 = 14 ;         Subtract "6.4" from each side of the equation; to isolate "pH" on one side of the equation; and to solve for the "pH" ; _________________________________________________       pH + 6.4 − 6.4 = 14 − 6.4 ; _________________________________________________       pH = 7.6   . _________________________________________________