What is the pH of a solution containing 0.12 mol/L of NH4Cl and 0.03 mol/L of...

What is the pH of a solution containing 0.12 mol/L of NH4Cl and 0.03 mol/L of NaOH (pka of NH4+/NH3 is 9.25)?

Expert Solution

NH₄⁺Cl^- + NaOH ---> NH₃ + H₂O + NaCl

0.12 0.03 0 initial

0.09 0 0.03 final

it forms bufferr.

pH= pKa + log {[NH3]/ [NH4Cl]}

pH = 9 .25 + log (0.03/0.09)

=9.25 + (-0.48)

= 8.77

Answer: 8.77

queen_honey_blossom answered 6 months ago

Calculate the pH if 0.03 mol HCl is added to 0.500 L of a buffer solution...

Calculate the pH if 0.03 mol HCl is added to 0.500 L of a buffer solution that is 0.24 M NH3 and 0.20 M NH4Cl? For NH3 Kb= 1.8 x 10-5

What is the pH of a solution containing 1.093 mol L-1 of a weak acid with...

What is the pH of a solution containing 1.093 mol L-1 of a weak acid with pKA = 3.36 and 1.406 mol L-1 of another weak acid with pKA = 8.42 ? 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".

What is the pH of a solution containing 0.383 mol L-1 CH3COOH and 0.392 CH3COO- mol L-1 ? Round...

What is the pH of a solution containing 0.383 mol L-1 CH3COOH and 0.392 CH3COO- mol L-1 ? Round your answer to 2 decimal places.

A buffer is made by adding 0.12 mol NH4Cl and 0.15 mol NH3 to enough water...

A buffer is made by adding 0.12 mol NH4Cl and 0.15 mol NH3 to enough water to make 0.250 L of solution. (Ka NH4+/NH3= 5.6 x10−10) a) Calculate the pH of the buffer solution b) What is the pH after the addition of 10.00 mL of 0.1 M NaOH to 90.00 mL of this buffer solution? Compare to pH in part a. c) What is the pH of a solution made by adding 10.00 mL of 0.1 M NaOH to...

What is the pH of a 1.00 L buffer solution that is 0.80 mol L-1 NH3...

What is the pH of a 1.00 L buffer solution that is 0.80 mol L-1 NH3 and 1.00 mol L-1 NH4Cl after the addition of 0.070 mol of NaOH(s)? Kb(NH3) = 1.76 ? 10?5

What is the pH of a 0.16 mol/L OH- solution? 1.What is the concentration of an...

What is the pH of a 0.16 mol/L OH- solution? 1.What is the concentration of an aqueous solution of NaOH (a strong base) which has a pH of 10.1? 2.What is the concentration of an aqueous solution of Ca(OH)2 (a strong base) which has a pH of 12.05? 3.Lactic acid is a weak acid with one acidic proton. A 0.10 M solution of this acid has a pH of 2.44. What is the Ka value of this acid? 4.Hydroflouric acid,...

What is the pH of a solution if I mix together 45 mL of 5.67 mol/L...

What is the pH of a solution if I mix together 45 mL of 5.67 mol/L Acetic acid (CH COOH) and 83 mL of 2.35 mol/L NaOH? Ka of acetic acid = 1.8 x 10

What is the pH of a 1.0 L buffer solution containing 0.370 M acetic acid and...

What is the pH of a 1.0 L buffer solution containing 0.370 M acetic acid and 0.361 M sodium acetate after you’ve added 0.095 moles of potassium hydroxide?

What is the pH of the buffer solution that contains 2.2 g of NH4Cl in 250...

What is the pH of the buffer solution that contains 2.2 g of NH4Cl in 250 mL of 0.12 NH3? Is the final pH lower than the pH of the 0.12 M ammonia solution?

1) Calculate the pH of 1.0 L of the solution upon addition of 0.010 mol of...

1) Calculate the pH of 1.0 L of the solution upon addition of 0.010 mol of solid NaOH to the original buffer solution. 2) Calculate the pH of 1.0 L of the solution upon addition of 30.0 mL of 1.0 MHCl to the original buffer solution. 3) A 1.0L buffer solution contains 0.100 molHC2H3O2 and 0.100 molNaC2H3O2. The value of Ka for HC2H3O2 is 1.8×10−5. 3A) Calculate the pH of the solution upon the addition of 0.015 mol of NaOH...

Question