1.What is the pH at which a buffer composed of NH3 and NH4+ would be most effective at resisting pH change? Round your answer to 2 decimal places.
Remember you can find KA and/or KB values in your textbook in chapter 15.
2.
Consider a 1.0 L buffer containing 0.119 mol L-1 HF and 0.081 mol L-1 F-. What is the pH of the solution after adding 5.7 x 10-3 mol of NaOH? Express your answer to 2 decimal places.
You have 5 attempts at this question.
Remember you can find KA and/or KB values in your textbook in chapter 15.
3.
What is the pH of a solution containing 0.303 mol L-1 HCN and 0.246 mol L-1 CN- ? Round your answer to 2 decimal places.
Remember you can find KA and/or KB values in your textbook in chapter 15.
4.
What is the pH of a solution containing 0.298 mol L-1 CH3NH2 and 0.276 mol L-1 CH3NH3+? Round your answer to 2 decimal places.
Remember you can find KA and/or KB values in your textbook in chapter 15.
5.
A 19.6 mL solution of 0.393 mol L-1 NaOH is titrated using 0.870 mol L-1 HCl.
What volume of HCl (in mL) is needed to reach the equivalence point in this experiment?
Remember you can find KA and/or KB values in your textbook in chapter 15.
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".
1.What is the pH at which a buffer composed of NH3 and NH4+ would be most...
What is the pH of a solution containing 0.342 mol L-1 NH3 and 0.140 mol L-1NH4? Round your answer to 2 decimal places. Remember you can find KA and/or Kg values in your textbook in chapter 15. Answer: Check A 45.3 mL solution of 0.283 mol L-1 HCl is titrated using 0.820 mol L-'NaOH. What volume of NaOH (in mL) is needed to reach the equivalence point in this experiment? Remember you can find KA and/or Ke values in your...
What is the pH of a solution containing 0.138 mol L-1 NH3 and 0.253 mol L-1 NH4+? Round your answer to 2 decimal places. Remember you can find KA and/or KB values in your textbook in chapter 15.
can someone please help me with these 3 questions?
Consider a 1.0 L buffer containing 0.098 mol L. HCOOH and 0.107 mol L'HCOO : What is the pH of the solution after adding 7.8 x 10-3 mol of NaOH? Express your answer to 2 decimal places. You have 5 attempts at this question. Remember you can find KA and/or Kg values in your textbook in chapter 15. Answer: Check What is the pH of a solution containing 0.489 mol L...
can someone help me with these two questions?
A 15.3 mL solution of 0.100 mol L-1 NaOH is titrated using 0.150 mol L-1 HCI. What is the pH of the solution after 16.7 mL of the HCl solution is added? Express your answer to 2 decimal places. You have 5 attempts at this question. Remember you can find KA and/or KB values in your textbook in chapter 15. Answer: Check A 15.2 mL solution of 0.100 mol L-1 HE is...
can someone please help me with these 3 queations?
A 12.3 mL solution of 0.804 mol L' HCl is titrated using 0.770 mol L- NaOH. What volume of NaOH (in ml) is needed to reach the equivalence point in this experiment? Remember you can find KA and/or Kp values in your textbook in chapter 15. Remember: if you want to express an answer in scientific notation, use the letter "E". For example "4.32 x 10^" should be entered as "4.32E4"....
Q2) What is the pH at which a buffer composed of CO32- and HCO3- would be most effective at resisting pH change? Round your answer to 2 decimal places. Remember you can find KA and/or KB values in your textbook
A 12.7 mL solution of 0.100 mol L-1 HCl is titrated using 0.150 mol L-1 NaOH. What is the pH of the solution after 5.26 mL of the NaOH solution is added? Express your answer to 2 decimal places. You have 5 attempts at this question. Remember you can find KA and/or KB values in your textbook in chapter 15.
A 18.3 mL solution of 0.100 mol L-1 HCl is titrated using 0.150 mol L-'NaOH. What is the pH of the solution after 14.4 mL of the NaOH solution is added? Express your answer to 2 decimal places. You have 5 attempts at this question. Remember you can find KA and/or Kg values in your textbook in chapter 15. Answer: Check A 12.1 ml solution of 0.100 mol L-' HF is titrated using 0.150 mol L- NaOH. What is the...
A 12.1 ml solution of 0.100 mol L-' HF is titrated using 0.150 mol L-1 NaOH. What is the pH of the solution after 3.23 ml of the NaOH solution is added? Express your answer to 2 decimal places. You have 5 attempts at this question. Remember you can find K, and/or Ką values in your textbook in chapter 15. Answer: 12.402 incorrect Try again What is the pH at which a buffer composed of CO32- and HCO31 would be...
A 11.4 mL solution of 0.100 mol L-1 HOCl is titrated using 0.150 mol L-1 NaOH. What is the pH of the solution after 4.76 mL of the NaOH solution is added? Express your answer to 2 decimal places. You have 5 attempts at this question. Remember you can find KA and/or KB values in your textbook in chapter 15.