. In the equilibrium, CO32-(aq)+NH4+(aq)⇄HCO3-(aq)+NH3(aq), HCO3- is the a. acid b. base c. conjugate acid d. conjugate base

A solution is prepared by mixing KF (aq) and NaNO3 (aq). Which of the following statements is true O A. We need to know the concentrations of KF (aq) and NaNO3 (aq) to determine whether it is acidic, basic or neutral B. The solution is neutral O C. The solution is acidic D. If there is more NaNO3 (aq) than KF (aq) the solution will be acidic, otherwise it will either be neutral or basic E. The solution is basic Reset Selection

Fill in the missing information in the following table. POH [H+] a. b. C. d. pH Solution a 9.69 Solution b Solution c Solution d pH pH pH РОН POH pOH 1.24 Ht 0.021 M H+ H+ M [OH¯] M [OH-] [OH M3.3 × 10-6 M M M [OH-] Acidic, Basic or Neutral? Acidic, Basic or Neutral? Acidic, Basic or Neutral? M Acidic, Basic or Neutral? V

haring > Identify the Brønsted-Lowry acid-base pairs in each of the following equations. You may want to reference (Pages 327-330) Section 10.2 while completing this problem. CO3²- (aq) + H₂O (1) OH- (aq) + HCO3- (aq) base CO32- conjugate base HCO3; acid H₂O conjugate acid OH- base CO32- conjugate acid HCO3; acid H₂O conjugate base OH- acid CO32- conjugate base HCO3; base H₂O conjugate acid OH- acid CO32- conjugate acid HCO3; base H₂O conjugate base OH- Submit Part C Request Answer H3PO4 (aq) + NH3(aq) + NH4+ (aq) + H₂PO4¯ (aq) base H3PO4 conjugate acid H₂PO4; acid NH3 conjugate base NH4+ base H3PO4 conjugate base H₂PO4¯ ; acid NH3 conjugate acid NH4+ acid H3PO4 conjugate base H₂PO4; base NH3 conjugate acid NH4+ acid H3PO4 conjugate acid H₂PO4; base NH3 conjugate base NH4+ Submit Request Answer

Enter a chemical equation for RbOH(aq)RbOH(aq) showing how it is a base according to the Arrhenius definition.

The pH of an aqueous solution at 25°C was found to be 4.90. The pOH of this solution is . The hydronium ion concentration is M. The hydroxide ion concentration is M.

Consider the reaction and indicate which reactant is the Lewis acid and which is the Lewis base. I H3C 1 H3C + FeCl3 Identify the true statement(s). CH₂COCI is the Lewis acid. FeCl₂ is the Lewis acid. FeCl, is the Lewis base. CH₂ COCI is the Lewis base. This not a Lewis acid-base reaction. + FeCl +

Which solution is most acidic (that is, which one has the lowest pH)? 0.30 M HF 0.60 M HF 0.30 M HBr

The ?a value for acetic acid, CH3COOH(aq), is 1.8×10−5. Calculate the pH of a 2.40 M acetic acid solution. Calculate the pH of the resulting solution when 2.50 mL of the 2.40 M acetic acid is diluted to make a 250.0 mL solution.

Calculate the pH of each of the following strong acid solutions.   A. 5.55×10−2 M  HNO3. Express the pH of the solution to three decimal places.   B. 0.260 gg of HClO3 in 2.70 L of solution. Express the pH of the solution to three decimal places.   C. 5.00 mL of 2.00 M HCl diluted to 0.500 L . Express the pH of the solution to three decimal places.   D. A mixture formed by adding 40.0 mL of 2.5×10−2 M HCl to 120 mL of 1.0×10−2 M  HI. Express the pH of the solution to two decimal places.