i have trouble understanding how to determine/explain the pH of a salt solution in this sodium ethanoate or other salt soultions,could you give me some tips in explaining them without testing them, hope you can help,
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pH is given by the negative logarithm of the concentration of H+ ions or hydronium
this would be expressed in an equation as:
pH=-log[H+]
if you are trying to determine the pH of a strong base, then divide 10^14 by the concentration of OH- to get the concentration of H+ (this is only at standard conditions).
weak acids and bases are an entire different thing. you would need the acid or base equilibrium constant of the chemical in question, and also know if a conjugate acid/base already exists in the solution. Much harder to calculate, and not needed for regular high school level chemistry.
this would be expressed in an equation as:
pH=-log[H+]
if you are trying to determine the pH of a strong base, then divide 10^14 by the concentration of OH- to get the concentration of H+ (this is only at standard conditions).
weak acids and bases are an entire different thing. you would need the acid or base equilibrium constant of the chemical in question, and also know if a conjugate acid/base already exists in the solution. Much harder to calculate, and not needed for regular high school level chemistry.