Question
Asked Mar 28, 2019
149 views

After 25.5 mL of 0.05 M NaOH has been added to 50mL of 0.1 M HF, what is the pH of the solution? (Ka (HF)=7.2*10-4)

check_circle

Expert Answer

Step 1

pKa of the buffer solution has to be determined for calculating the pH of the solution.

fullscreen
Step 2

Number of moles of HF and NaOH was determined using the formula for molarity.

fullscreen
Step 3

Volume of NaOH is 25.5mL whereas the volume of HF is 50mL. It implies that HF is in excess and pH depends on the excess moles of HF. Here...

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Chemistry

Related Chemistry Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: } LIOH -Cl tN NO Hasoy socla E13N CI

A: Hey, since there are multiple sub-parts question posted, we will answer first three questions. If yo...

question_answer

Q: Clculate Gibbs free energy when  delta H = +125kJ/mol , T = 293K, mol and  delta S = 0.0350kJ/(mol K...

A: The change in Gibbs free energy is calculated as,

question_answer

Q: What goal is accomplished by standardizing  solutions?

A: Standard solution is made from a solute of known amount to prepare a solution of known concentration...

question_answer

Q: Table 5.5 (data)ObservationsSample Tested Add NH 3Solid CaCO 3 _______Solid CuSo 4 _______Mixture __...

A: In first image two solutions are prepared -one of solid calcium carbonate and other of solid copper ...

question_answer

Q: what would the chemical reaction be for the process of aspirin when combining salicylic acid, phosph...

A: Preparation reaction of aspirin from the combination of salicylic acid, phosphoric acid, and acetic ...

question_answer

Q: How many chloride ions (Cl1-) are needed to balance the positive charge of a Sodium ion (Na 1+)? a. ...

A: For the balancing of ions, the number of positively charged ions must combine with same number of ne...

question_answer

Q: What is the name of the compounds with the formulas Compound Formula  Name of compund NiS   F...

A: Compound formula    Name of compoundNiSNickel(II) sulfideFeCl2Iron(II) chlorideCoBr3Cobalt(III) Brom...

question_answer

Q: Essays are to be around 50 words each. Each essay needs to include a reaction that relates to what y...

A: The metals react with the environment results in the chemical or electrochemical degradation of meta...

question_answer

Q: How do the activation energy and the energy of reaction determine if a chemical process is endotherm...

A: Activation energy is the minimum amount of energy required to start a reaction.  Every reaction shou...