How many moles of naf must be added

Assignment Help Chemistry
Reference no: EM13152645

How many moles of NaF must be added to 100.00mL of 0.15 M HF to prepare a buffer with pH=3.30. Ka(HF)=7.1*10^-4

Reference no: EM13152645

Questions Cloud

Identify any abnormal data in the description : A 47 year old teacher goes to her physician complaining of dizziness, fainting, and shortness of breath. She appears pale and chronically ill. Her heart rate is 70/min supine and 68/min sitting and standing.
What is the change in ph : what is the change in pH after addition of 10.0mL of 1.0M sodium hydroxide to 90.0mL oof a 1.0M NH3/1.0M NH4+ buffer? (Kb for ammonia is 1.8 X 10-5)
Allocated and actual overhead directly to cost of goods sold : Prepare a journal entry to write off the difference between allocated and actual overhead directly to Cost of Goods Sold. Be sure your journal entry closes the related overhead accounts.
What is the total mass in grams of a series of samples : what is the total mass in grams of a series of samples that have masses of 753mg,
How many moles of naf must be added : How many moles of NaF must be added to 100.00mL of 0.15 M HF to prepare a buffer with pH=3.30. Ka(HF)=7.1*10^-4
How would quantity demanded and the price of this product : What geographic area would the market area typically considered be? How would quantity demanded and the price of this product be measured?
Obtain intuitive evidence against hypothesis : Far separated sample means + differences of sample means are large compared to their internal (within) variability! Which of the following examples indicate group diff"s are "large"?
Declaration of independence : Look at the format (or the layout) of the Declaration of Independence. Is there anything unique, different, or surprising about the document – Explain?
Total ordinary income and capital gain : During the year, $22,500 is distributed to Elk"s three equal shareholders, all of who are calendar year taxpayers. What are Elk"s total ordinary income and capital gain passthroughs for the year?

Reviews

Write a Review

Chemistry Questions & Answers

  Simple distillation while the boiling point

Give explanation why the boiling point of a 2-component mixture increase slowly throughout a simple distillation while the boiling point differences are not large?

  What is the rate of the reaction

Find the rate of the reaction - What is the rate of the reaction?

  Calculate the mass of calcium carbonate formed

Calculate the mass of calcium carbonate formed when 25 mL of a solution of calcium chloride at 0.10 M react with sodium carbonate in excess

  What was the percent copper in the ore

an 8 g sample of a copper ore was dissolved in an acid solution and then reacted with NO3- from a KNO3 salt solution. it required 71.5 ml of a .155 M KNO3 solution to fully react the copper in the ore sample.

  How many ml of nitric acid are needed

How many mL of .360M HNO3 are needed to neutralize a 22.5mL sample of .240M KOH.

  What is the molality of a solution

What is the molality of a solution that contains 2.93 grams of urea (molar mass = 60.0 g/mol) in 141 grams of benzene.

  Calculate the moles of ar present

A 335 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 628 mmHg. Calculate the moles of Ar present.

  What is the new volume of the gas

If I initially have a gas at a pressure of 12 atm a volume of 23 liters, and a temerature of 200k, and then I raise the temperature to 14 atm and increase the temperature to 300k, what is the new volume of the gas ?

  What is the equilibrium concentration of n2

3H2 (g) + N2 (g) 2NH3(g), Kc = 6.0 × 10-2 at 500°C for this nitrogen fixation reaction. What is the equilibrium concentration of N2 If 0.250 M H2 and 0.050 M NH3 are present at equilibrium?

  What is the percent yield

Consider the following reaction. N2 + 3 H2 → 2 NH3 . 28.0 grams of N2 and 5.04 grams of H2 are reacted, producing 17.8 grams of NH3. What is the percent yield?

  What is the final temperature of the system

A 530. g piece of copper tubing is heated to 92.0°C and placed in an insulated vessel containing 49.5 g of water at 39.5°C. Assuming no loss of water and heat capacity for the vessel of 10.0 J/K,

  What is the molecular formula of compound

A compound composed of sulfur and fluorine is found to contain 25.24% by mass of sulfur. If the molar mass of the compound is 254.11 g/mol, what is its molecular formula?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd