Calculate the (H+] in a solution that is 0.784 M in Nax and 0.440 M in HX given that the Ka of HX is 1.64 . 10-3. Report your answer in scientific notation to 3 sig figs. Preview
A weak monoprotic acid, HA dissociates by 1.300 % and has a pH of 2.15. Calculate the Ka value for the acid HA. Record your answer in scientific notation to 3 sig figs. Preview
Calculate the [H+] in a solution that is 0.741 M in NaX and 0.252 M in HX given that the Ka of HX is 5.68⋅10−2. Report your answer in scientific notation to 3 sig figs.
Calculate the [H+] in a solution that is 0.170 M in NaX and 0.657 M in HX given that the Ka of HX is 4.49⋅10−3. Report your answer in scientific notation to 3 sig figs.
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.
1. 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.
A 0.100 M solution of an unknown acid, HA, is 1.47% ionized. Complete the following table, but instead of using the variable x, calculate the number values of each quantity and report these values to the correct number of significant figures. Fill in all of the cells. Include signs in the Change column to indicate a gain or loss of concentration. Do not include any units in your answers, M is assumed. To enter values in scientific notation follow the...
Given the following data, calculate the moles of S2O32- consumed. Molar concentration of Na2S2O3: 0.02 mol/L Volume of Na2S2O3: 6 mL (Provide your answer in scientific notation and with two sig figs) Example: if answer is 0.00002 then input 2.0e-5 or 2.0E-5
Consider a weak acid "HA". What is the pH of a 1.055 mol L-1 solution of HA? The KA of HA is 1.73 x 10-7 . You have 5 attempts at this question. Remember: if you want to express an answer in scientific notation, use the letter "E". For example "4.32 x 104" should be entered as "4.32E4".
7. An acid HA is dissolved in water: HA ---> H+ + A– . [HA] = 0.250 M ; [H+] = 4.00 x 10–4M ; <---- [A–] = 4.00 x 10–4M. Calculate the pKa for the acid. Show your work below.