K, for hydrofluoric acid, HF, is 7.20 x 10-4 K, for formic acid, HCOOH, is 1.80 x 10-4. K, for acetic acid, CH3COOH, is 1.80 x 10-5 What is the formula for the weakest acid? Drag and drop your selection from the following list to complete the answer: CH3COOH HF HCOOH
The weak acid HA has a Ka of 1.80×10−5. If a 1.9 M solution of the acid is prepared, what is the pH of the solution?
An aqueous solution has [OH-] = 8.5 x 10-8. What is the pH of this solution? Place your answer in the box. Express your answer using only a number or numbers without text. Report your result in decimal notation and to the proper number of significant figures. All numbers are measured
A weak acid has a K, of 1.8 x 10-7. What is the value of pK, for the acid? PK, -
Question 1 : HA is a weak acid. Its ionization constant, Ka, is 1.2 x 10-13. Calculate the pH of an aqueous solution with an initial NaA concentration of 0.075 M. Question 2 : We place 0.143 mol of a weak acid, HA, in enough water to produce 1.00 L of solution. The final pH of the solution is 1.28 . Calculate the ionization contant, Ka, of HA. Question 3 : We place 0.661 mol of a weak acid, HA,...
A certain inorganic acid has a pKa of 5.8. what is its Ka?
enter answer in scientific notation.
2 attempts left Check my work A certain inorganic acid has a pK, of 5.8. What is its K,? Enter your answer in scientific notation. Be sure to round your answer to the correct number of significant figures. K - T X 10 (select) References eBook & Resources
A monoprotic weak acid has a Ka of 1.44 x 10-4. What would be the pH if 1.03 moles of the acid is dissolved in 1 liter of water?
Hydrocyanic acid, HCN is a weak acid with a Ka of 4.9 x 10^-10. What pH would a 0.50M solution of HCN have? Calculate the Kb value for NaCN using information from the previous question.
#4 (a) HA(aq) is a weak acid with a dissociation constant, Ka, of 1.0 x 10-11. What is the pH of a solution 0.061 M in A-(aq)? The temperature is 25oC. (b) For the reaction A(g) ⇋ B(g) + C(g), the equilibrium constant is 1.80 at 25.0oC and 4.14 at 75.0oC. Assuming ΔH and ΔS do not change with the temperature, calculate the value of the equilibrium constant at 50.0oC and the value of ΔSuniverse at 50.0oC.
HA is a weak unknown acid with a Ka = 2.50 x 10-1. If 1.00 moles of HA is dissolved in water, then use the ICE method to determine the equilibrium concentration of A-1(aq). Report your answer to two sig figs without a unit label.... don't use scientific notation.