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Give the pH of 0.005 M C6H5O- (aq) at 298 K of the Ka for C6H5OH at the given T is 1.0 x 10-10
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- HF(g) + H,O(1) H,0*(aq)+ F"(aq) K = 1.1 x 10-3 F (aq) + HF(g) HF;(ag) K= 2.6 x 10- a. Is fluoride in pH 7.00 drinking water more likely to be present as F"(aq) or HF2 (aq)? O HF2 (aq) O F(aq) b. What is the equilibrium constant for this equilibrium? Number 2 HF(g) + H,0(1) H,0*(aq) + HF, (aq) c. What are the pH and equilibrium concentration of HF2" in a 0.150 M solution of HF? (HF, - Number Number pH = M Check Answer View SolutionWrite the equilibrium constant expression, K, for the following reaction taking place in dilute aqueous solution. HCIO(aq) + H,O(1)=H;0*(aq) + CIO"(aq) K =For H2SO4, Ka,1 is very large and pKa.2 = 1.96 at 25 °C. For 0.00105 mol L- H2SO4(aq) at 25 °C, calculate: (a) the equilibrium concentration of the singly-ionized form, HSO4 [HSO4 leq = Number mol L-1 (Enter a number accurate to 2 significant figures.) (b) the fraction, az, of H2SO4 that exists in the doubly-ionized form, SO22- a2= Number (Enter a number between 0 and 1, accurate to 2 significant figures.) (c) the pH pH = Number (Enter a number accurate to 2 decimal places.)
- hát is the équilibrium constant for the following reactionWrite the equilibrium constant expression, K, for the following reaction taking place in dilute aqueous solution. NH3 (aq) + H2O(1) =NH,* (aq) + OH(aq) K=-An aqueous solution of acetic acid is found to have the following equilibrium concentrations at 25°C: [CH3COOH] = 1.65 x 10-2 M; [H+] = 5.44 x 10-4 M; and [CH3COO-] = 5.44x10-4 M. Calculate the equilibrium constant Kc for the ionization of acetic acid at 25°C. The reaction is CH3COOH(aq) ↔ H+(aq) + CH3COO-(aq)
- Write the equilibrium constant expression, K, for the following reaction taking place in dilute aqueous solution. HCN (aq) + OH" (aq) CN" (aq) + H,0 (1) K =Consider the following aqueous chemical equilibrium of benzoic acid, a weak acid: C6H5COOH(aq) + H2O(l) is in equilibrium with H3O+(aq) + C6H5COO-(aq) a. The addition of H3O+(aq) to the chemical equilibrium will have what effect on the amount (moles) of C6H5COO-(aq) in the system? b. Addition of OH-(aq) to the chemical equilibrium will have what effect on the amount (moles) of C6H5COOH(aq) in the system? c. Removal of C6H5COO-(aq) from the chemical equilibrium will have what effect on the amount of (moles) H3O+(aq) in the system? d. Increasing the pH of the solution will have what effect on the amount (moles) of C6H5COOH(aq) in the system?Given that K, for formic acid is, HCHO2 is 1.7 x10 and that for acetic acid, HC,H;0, is 1.8 x105, calculate K, for CHO,", and C,H3O2?
- The following equilibrium constants have been determined for hydrosulfuric acid at 25oC ; H2S(aq) ↔ H+(aq) + HS-(aq) Kc’ = 9.5x10-8 HS-(aq) ↔ H+(aq) + S2-(aq) Kc’’ = 1.0x10-19 Calculate the equilibrium constant Kc for the following reaction at the same temperature. H2S(aq) ↔ 2H+(aq) + S2-(aq) 8x10-18 5x10-27 4x10-16 8x10-25 9x10-24Write the equilibrium constant expression, K, for the following reaction taking place in dilute aqueous solution. HNO,(aq) + H2O(1)=H;0*(aq) + NO,"(aq) K =Consider the reaction at 25 degrees celsius 2NO3-(aq)+8H+(aq)+3Cu(s)=3Cu2+(aq)+2NO(g)+4H2O(l) At what pH is the reaction at equilibrium with all other ionic species at 0.01M and gases at 1 atm?