Explain how many milliliters of the nafor solution

Assignment Help Chemistry

Reference no: EM13533701

1. Formic acid, HFor, has a Ka value equal to about 1.8 X 10^-4. A student is asked to prepare a buffer having a pH of 3.40 from a 0.10 M HFor and a 0.10 M NaFor solution. How many milliliters of the NaFor solution should she add to 20 mL of the 0.10 M HFor to make the buffer?

2. When 5 drops of 0.10 M NaOH were added to 20 mL of the buffer in problem 3, the pH went from 3.40 to 3.43. Write a net ionic equation to explain why the pH didn't go up to about 10, as it would have if that amount of NaOH were added to distilled water or to 20 mL 0.00040 M HCl, which also would have a pH of 3.40.

Reference no: EM13533701

Questions Cloud

Calculate the combined mass of pluto and charon : Pluto's moon Charon orbits Pluto every 6.4 days with a semimajor axis of 19,700 kilometers. Calculate the combined mass of Pluto and Charon

Inner mitochondrial membrane : Which enzyme of the TCA cycle is physically associated with the inner mitochondrial membrane?

Find the largest number of nodes : Find the largest number of nodes that can be activated in the end by selecting only one node into the seed set

Use the binomial expansion equation to calculate probability : Use the binomial expansion equation to calculate the probability that in a family of four children from a family where both parentsare heterozygous for blue eyes (Bb x Bb), one will have blue eyes. Does this answer surprise you?

Explain how many milliliters of the nafor solution : Formic acid, HFor, has a Ka value equal to about 1.8 X 10^-4. A student is asked to prepare a buffer having a pH of 3.40 from a 0.10 M HFor and a 0.10 M NaFor solution. How many milliliters of the NaFor solution should she add to 20 mL of the 0.10..

What is the speed of the mass as it swings : Consider the conical pendulum, a mass on the end of a string, with the other end of the string fixed to the ceiling. what is the speed (in m/s) of the mass as it swings

Find at what average velocity can the motor move the crate : A 5.00-kW motor is used to pull a 20.0-kg crate up a 15.0°-incline of length 4.00 m. At what average velocity can the motor move the crate up the incline

Explain what is the molarity of a saline solution : What is the molarity of a saline solution that contains 0.900 g NaCl (58.44 g/mol) dissolved in 100.0 mL of solution

Different from the expression of autosomal genes : How are Golgi bodies and cytoskeletons related?Golgi bodies and lysosome? How is the expression of sex-linked genes similar and different from the expression of autosomal genes?

User Account

All Pages