What mass of potassium fluoride

Reference no: EM13897953

The answer is E. I'm confused doing the step by step procedure. I'm not sure why we use [H+]=10^-pH and Ka*Kb=Kw.

What mass of potassium fluoride must be added to 500.0 mL of water to give a solution with pH = 8.07? [Ka(HF) = 7.1 × 10-4]

A) 68 g B) 1.7 × 10-4 g C) 1.96 g D) 0.95 g E) 2.91 g

Reference no: EM13897953

Questions Cloud

Calculate the freezing point f the solution : Calculate the freezing point f the solution. (The density of the solution is 1.037 g/mL. MWt of glucose = 180 g/mole)A) 1.07 C B) 296.9 K C) -1.00 C D) +1.00 C E) 272.08K

Relationship between acceleration and mass : On this graph the x-variable is the reciprocal of the total mass being accelerated. How does the shape of this graph look? What does this imply about the relationship between acceleration and mass when the force is constant

What would be the de broglie wavelength : What would be the de Broglie wavelength of a helium atom (atomic weight = 4.00 g/mol) moving at 100 m/s ?

What is chromatography : How do differences in polarity and molecular weight between amino acids affect migration in a mixture of proteins?

What mass of potassium fluoride : The answer is E. I'm confused doing the step by step procedure. I'm not sure why we use [H+]=10^-pH and Ka*Kb=Kw. What mass of potassium fluoride must be added to 500.0 mL of water to give a solution with pH = 8.07? [Ka(HF) = 7.1 × 10-4]

How are spectrophotometric measurements used : What are the advantages and disadvantages in using spectrophotometric measurements for the analysis of various compounds?

Calculate the density of the material : (ii) calculate the density of the material,given that its atomic weight is 141g/mol.(b) Molybdenum (Mo) has a Bcc crystal structure,an atomic radius of 0.1363nm and an atomic weight of 95.94g/mol. compute its theoretical density.

Complete the covariance and correlation coefficient : Complete the covariance and correlation coefficient between the returns of the 2 asset classes

What is the speed of the hailstones with respect to ground : The pilot of a spacecraft moving horizontally at 10 m /?s notices that the hailstones going past the port window makes an angle of 45° with the downward vertical. What is the speed of the hailstones with respect to the ground

User Account

All Pages