Label the following solutions as having a pH greater than, less than, or equal to the pKa. A solution that contains 0.300 M HF and pH equals the pKa 0.300 M NaF A solution that contains 0.100 M HCIO2 and 0.300 M KCIO2 pH will be greater than the pka + A solution prepared from 50.0 mL of a 0.500 Choose... M HCN and 75.0 mL of 0.100 M NaCN A solution prepared from 100.0 mL of a 0.255 M NaH2PO4 and 75.0 mL of 0.340 M Choose... Na2HPO4

If 25 mL of 0.750 M HCl are added to 100. mL of 0.352 M NaOH, what is the final pH? Select one: a. 13.12 b. 0.88 c. 13.45 d. 0.55 e.7.00

Calculate the pH of a buffer solution made by dissolving 50 g of NaHCO3 and 20 g of H2CO3 to make 100 mL of a buffer solution. Help! H2CO3 Ka1= 4.30 x 10^-7 a. 6.77 b. 6.63 c. 6.10 d. 6.37

Question is attached.

The pH after adding 21.0 mL of 1.0 M NaOH to 25.0 mL of 1.0 M HCl is   0.087   0.16   0.80   1.1

Equal molar amounts of benzoic acid and sodium acetate are mixed together in water, is the resulting solution acid,basic, or neutral? Here are some Ka values

What combination of substances will give a buffered solution that has a pH of 5.05? (Assume each pair of substances is dissolved in 5.0 L of water.) (Kb for NH3 = 1.8 ´ 10–5; Kb for C5H5N = 1.7 ´ 10–9) a. 1.0 mole NH3 and 1.5 mole NH4Cl b. 1.5 mole NH3 and 1.0 mole NH4Cl c. 1.0 mole C5H5N and 1.5 mole C5H5NHCl d. 1.5 mole C5H5N and 1.0 mole C5H5NHCl e.none of these

Ka of acetic acid equals 1.8*10^-5 The buffer solution is 50 mL of 0.2 M CH3CO2H and 50 mL of 0.2 M NaCH3CO2together in a beaker.  What is the theoretical pH of each soluton? a. 50 mL of boiled deionized water + 5 mL of 0.2 M HClb. 50 mL of boiled deionized water + 5 mL of 0.2 M NaOHc. 50 mL of buffer + 5 mL of 0.2 M HCld. 50 mL of buffer + 5 mL of 0.2 M NaOH

Change the top option to a Base and repeat the table for 0.001, 0.01, 0.1 and 1 for the base filling in the table below. Acid Base Initial pH Initial pH Concentration Concentration 0.001M 3.00 0.001M 11.00 0.01M 2.00 0.01M 12.03 0.1M 1.00 0.1M 13.00 1M 0.00 1M 14.00 If you were to use a calculator to do these calculations would you get the same answers? Try at least one on the acid side and one on the base side to confirm your answer.

Classify the salts according to strength and role in buffer system. Classifications are as follows: Strong Acid/Conjugate Base, Strong Base/Conjugate Acid, Weak Acid/Conjugate Base, or Weak Base/Conjugate Acid. Example: HCI - Strong Acid/Conjugate Base 1. CaCO3 2. Li2SO3 3. Na₂S 4. Na3PO4 5. KC1 5000000 6. KCN 7. BaClz 8. NSHCO3 9. NACOOCH3 10. N₂HsBr 11. AgNO3 12. KHSO4 13. NaOCI wwwwww 14. NaNO3 15. NaH₂PO4