Question 4 of 10 Submit What is the pH of a 0.0560 M solution of hydrocyanic...
Question 6 of 12 Submit What is the pH of a 0.0550 M solution of hydrocyanic acid, HCN (Ka = 4.9 x 10-10)? 1 4 7 +/- 2 5 8 : 3 6 9 0 x 10
Question 41 of 68 What is the pH of a 0.0710 M solution of hydrocyanic acid, HCN (Ka = 4.9 x 10/1)? 1 2 3 7 8 9 +/- x 100
Question 2 of 10 Submit What is the pH of a 9.3 x 10-6 M KOH solution? 1 2 3 +/- 0 x100 x 100 Tap here or pull up for additional resources
help! i got it wrong Question 14 of 62 Submit What is the pH of a 0.0380 M solution of HONH3CI (Kb of HONH2 is 1.1 x 10-8)? 3.6 1 2 3 7 +/- 8 : 9 0 +/- x 100 Tap here or pull up for additional resources
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.
Question 8 of 10 Submit What is the concentration of a solution made with 0.450 moles of KOH in 400.0 mL of solution? 1 2 3 +/- x 100 Tap here or pull up for additional resources
Question 5 of 10 Submit What is the solubility of MgCO, in water? (Ksp of MgCO, is 3.5 x 10-) M 1 2 3 +/- 0 x 100 Tap here or pull up for additional resources
Calculate the volumes of 0.200 M hydrocyanic acid, HCN (Ka = 4.9 x 10–10) solution, and 0.200 M of sodium cyanide, NaCN, solution needed to prepare 100.0 mL buffer solution with pH = 9.5
Question 25 of 37 Submit The concentration of the hydronium ion in an aqueous solution at 25°C is 0.0054 M. What is the concentration of the hydroxide ion? M 1 3 x N 4 5 6 с 7 8 9 +/- 0 x 100 Tap here or pull up for additional resources
Question 8 of 10 Submit For the reaction below, Kc = 1.10 x 10-4. What is the equilibrium concentration of C if the reaction begins with 0.200 MA and 0.750 MB? 2 A (aq) + B (aq) = C (aq) 123 +/- 0 x 100 Tap here or pull up for additional resources