This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A student titrates an unknown weak acid, HA, to a pale pink phenolphthalein endpoint with 25.0 mL of ... (Read 85 times)

jc611

  • Hero Member
  • *****
  • Posts: 552
on: Mar 21, 2021
A student titrates an unknown weak acid, HA, to a pale pink phenolphthalein endpoint with 25.0 mL of 0.100 M NaOH. The student then adds 13.0 mL of 0.100 M HCl. The pH of the resulting solution is 4.7. Which of the following is true?

◦ At pH 4.7, half the conjugate base, A–, has been converted to HA.
◦ The pKa of the acid is 4.7.
◦ The pKa of the acid is less than 4.7.
◦ The pKa of the acid is greater than 4.7.
◦ More than one of these is correct.
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by jc611 on Mar 21, 2021

mistyjohnson

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Mar 21, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly


jc611

  • Member
  • Posts: 552
Reply 2 on: Mar 21, 2021
Thanks for the timely response, appreciate it

diana chang

  • Member
  • Posts: 288
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Crassulacean acid metabolism, or CAM, photosynthesis Crassulacean acid metabolism, or CAM, photosynthesis
Remediating Acid Rock Drainage Remediating Acid Rock Drainage
Titration curve for aspartic acid Titration curve for aspartic acid
Guanosine 3’,5’-tetraphosphate senses amino acid starvation Guanosine 3’,5’-tetraphosphate senses amino acid starvation
An unknown gas occupies a volume of 1.50 L at 21 °C and 0.950 atm. If the mass i An unknown gas occupies a volume of 1.50 L at 21 °C and 0.950 atm. If the mass i
Linolenic Acid Conversion to EPA and DHA. Linolenic Acid Conversion to EPA and DHA.
Video: Corpus Callosum Animation

For a complete list of videos, visit our video library