What is the concentration of X2− in a 0.150 M solution of the diprotic acid H2X? For H2X, Ka1=2.9×10−6 and Ka2=6.9×10−11 possible answers: a.) 2.1×10−7 M b.) 1.6×10−8 M c.) 6.9×10−11 M d.) 6.6×10−4 M

A solution has a pOH = 3.45. Calculate [H] [Select] [ Select] 10.55 Calculate [OH 2.8x10-11 2.8x10-3 3.55x10-4 >

Which one of the following 1.0 M solutions would be expected to have the highest pH?

D D Question 1 If you had solutions of each of the following compounds, at the same concentration, which is the correct order of decreasing pH? O KOH, NH4CI, KBr, NaC₂H3O2, HCI O HCI, NH4CI, NaC2H3O2, KBr, KOH O KOH, NaC₂H3O2, KBr, NH4CI, HCI OHCI, NH4CI, KBr, NaC2H3O2, KOH Question 2 Which compound would produce an acidic solution when added to water? OKCI O NH4CN O HCIO₂ O NaOH KBr, HCI, KOH, NH4CI, NaC₂H30₂

Determine whether aqueous solutions of the following salts are acidic, basic or neutral: a.) AI(NO3)3 b.) RBI c.) KHCO2 d.) CH3NH3BR

3. Write equations for the formation of each salt. Write if the salt is,acidic, basic or neutral. Zn (aq) + HCL (D): (aq) ZnCl2 (aq) + H2 HCN__(aq) = NaCN (aq) + H₂O a) b) NaOH(aq) + c) (aq) + (aq) + (aq) + d) e) (aq) → CuSO4 (aq) + H2O (1): (aq) (NH4)2SO4 (aq) + (1): (aq) BaCl2 (aq) + (1):

The Ka of HF is 6.8 x 10-4. What is the pH of a .35M solution of HF?     Group of answer choices 3.17 6.46 1.81 3.62

17. What are the concentrations of H+ and OH- in each of the following 1.2 М НBr 0.32М КОН

What is the pH of a 7.1 × 10-4 M HCIO4 solution? 1 3 4 6. C 7 8 9. +/- х 100

Q) Suppose you prepared 1.0 M of the following aqueous solutions: Solution 1: Na2SO4 Solution 2: NaOH Which solution do you expect to be more basic? a) Solution 1 will be more basic b) Solution 2 will be more basic c) Both solutions will have the same pH d) Not enough information is provided to answer the question