1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
krek1111 [17]
3 years ago
7

What is the pH at the half-equivalence point in the titration of a weak base with a strong acid? The pKb of the weak base is 7.9

5. What is the pH at the half-equivalence point in the titration of a weak base with a strong acid? The of the weak base is 7.95. 8.75 6.05 7.95 5.25
Chemistry
1 answer:
ValentinkaMS [17]3 years ago
5 0

Hey there!

Given the reaction:

B + H⁺   => HB⁺


At half-equivalence point :  [B] = [HB⁺]

=> [B] / [HB⁺] = 1

Henderson-Hasselbalch equation :


pH = pKa + log ( [B] ) / ( HB⁺)]

pH = 14 - pKb + log ( 1 )

pH = 14 -  7.95 + 0

pH = 6.05


Answer C


Hope that helps!



You might be interested in
What are the characteristics of Mercury? (Select all that apply.)
Sunny_sXe [5.5K]

Answer:

less gravity, closest to the sun

5 0
3 years ago
Read 2 more answers
Question # 4 & 5. help CHEMISTRY
laila [671]
1. A thermodynamic quantity that is the difference between the internal energy of a system and the product of itsabsolute temperature and entropy; the capacity of a system to do work, as in an exothermic chemical reaction.<span>2. </span>A thermodynamic quantity that is the difference between the enthalpy and the product of the absolute temperatureand entropy of a system. Also called <span>Gibbs free energy</span>. 
4 0
3 years ago
All of the following will be damaging to the environment except
Umnica [9.8K]
Adding fertilizer to stimulate the aquatic plant growth, and putting research and money into renewable energy
3 0
3 years ago
Read 2 more answers
Hi can anyone answer these two distance and time questions
Likurg_2 [28]
1 is hours and 2 is meters
5 0
3 years ago
NEED HELP ASAP
katrin [286]
Removing seed casings from grains is SEPARATING. a soda bubble bubbling when it is opened is MIXING. a bright copper statue turning green is MIXING. remove salt from seawater is SEPARATING. water decomposing is SEPARATING.
7 0
3 years ago
Other questions:
  • Many trials are not needed before a hypothesis can be accepted
    5·1 answer
  • If the strength of the magnetic field at A is 10 units, the strength of the magnetic field at B is _____. 640 units 6.4 units 2.
    10·2 answers
  • Can you place the following elements in order of decreasing atomic size: selenium, chlorine, fluorine, rubidium, calcium, and su
    14·2 answers
  • Once the chromatographic column has been prepared, why is it important to allow the level of the liquid in the column to drop th
    15·1 answer
  • Is C2H2 + 2H2 ----- C2H6 a substitution reaction​
    15·1 answer
  • How many total atoms are in 0.450 moles of carbon dioxide?
    14·1 answer
  • Someone PLEASE help me I don’t remember this.
    13·1 answer
  • What can affect the reaction RATE but not the rate constant?
    14·1 answer
  • Please help ! its urgent!!
    9·1 answer
  • What form when moisture evaporates into the air and then cools?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!