molarity

What is the concentration of a weak acid if its K a =3.7 x 10^ -7 and its pH = 3.38 ?

A 0.2000 M solution of hydrofluric acid is only partially ionized. Using measurements of the pH of the solution, [H+] was determined to be 3.184 x 10^-2. Calculate the acid dissociation constant of hydroflouric acid.

The pH of a Ba(OH)2 (strong base) solution is 10. What is the H+ ion concentration of this solution?

Phthalic acid is a diprotic acid with ionization constants Kal = 1.12 × 10−³ and Ka2 = 3.90 × 10-6. Calculate the pH of a 0.237 M potassium hydrogen phthalate (KHP) solution. pH =

What is the concentration of hydroxide ion in a 0.45 M aqueous solution of hydroxylamine, NH2OH? (Assume the value of Kw is 1.0 ✕ 10−14.)

Strong acids and strong bases ionize 100% in aqueous solution.- HCl is a strong acid. In solution we write it as H+(aq) + Cl -(aq).- HF is a weak acid. In solution we write it as HF(aq).- KOH is a strong base. In solution we write it as K+(aq) + OH -(aq).- NH3 is a weak base. In solution we write it as NH3(aq).Exception: Since Ca(OH)2 is only slightly soluble we write it as Ca(OH)2(s).Below is a list of the 6 strong acids and 6 strong bases you should know. All other acids and bases are considered weak. Strong Acids Strong Bases HCl, HBr, HI LiOH, NaOH, KOH HNO3 Ca(OH)2 (slightly soluble) HClO4 Ba(OH)2 H2SO4 Sr(OH)2 Question 1)What is the hydronium ion concentration in an aqueous hydrobromic acid solution that has a pOH of 10.200?[H3O+] =  M

For the diprotic weak acid H2A, ?a1=3.6×10−6 and ?a2=8.5×10−9. What is the pH of a 0.0800 M solution of H2A? pH=     What are the equilibrium concentrations of H2A and A2− in this solution? [H2A]=   M [A2−]=[A2−]=

Barbituric acid, HC4H3N2O3, is used ito prepare various barbiturate drigs (used as sedaives). Without solving the quadratic equation, calculate the concentration of hydrogen ion in a (2.30x10^-1) M solution of the acid. The value of Ka is 9.8x10-5. Express your answer to three significant figures. ------------------------------------------------------------------------------------------------------------------------ What is the concentration of hydroxide ion in a (7.20x10^-2) M aqueous solution of methylamine, CH3NH2? The Kb for methylamine is 4.4x10-4. You need to solve the quadradic equation for this problem. Express your answer to three significant figures.  ------------------------------------------------------------------------------------------------------------------------ A solution of lactic acid, HC3H5O3, on a laboratory shelf was of undetermined concentration. If the pH of the solution was found to be (2.51x10^0), what was the concentration of the lactic acid? The Ka of…

Strong acids and strong bases ionize 100% in aqueous solution.- HCl is a strong acid. In solution we write it as H+(aq) + Cl -(aq).- HF is a weak acid. In solution we write it as HF(aq).- KOH is a strong base. In solution we write it as K+(aq) + OH -(aq).- NH3 is a weak base. In solution we write it as NH3(aq).Exception: Since Ca(OH)2 is only slightly soluble we write it as Ca(OH)2(s).Below is a list of the 6 strong acids and 6 strong bases you should know. All other acids and bases are considered weak. Strong Acids Strong Bases HCl, HBr, HI LiOH, NaOH, KOH HNO3 Ca(OH)2 (slightly soluble) HClO4 Ba(OH)2 H2SO4 Sr(OH)2 What is the hydronium ion concentration in an aqueous hydrochloric acid solution with a pH of 4.250?[H3O+] =  M