Buffer capacity is a measure of a buffer solution's resistance to changes in pH as strong acid or base is added. Suppose that you have 175 mL of a buffer that is 0.140 M in both formic acid (HCOOH) and its conjugate base (HCOO-). Calculate the maximum volume of 0.460 M HCl that can be added to the buffer before its buffering capacity is lost.
In: Chemistry
In: Finance
Write about the changes in GWP in the last ten years and the reasons behind it.
In: Economics
Newton's law of cooling states that the temperature of an object
changes at a rate proportional to the difference between its
temperature and that of its surroundings. Suppose that the
temperature of a cup of coffee obeys Newton's law of cooling. If
the coffee has a temperature of 205 degrees Fahrenheit when freshly
poured, and 1 minutes later has cooled to 190 degrees in a room at
64 degrees, determine when the coffee reaches a temperature of 150
degrees.
The coffee will reach a temperature of 150 degrees in how many
minutes?
In: Advanced Math
When is duration appropriate for estimating the bond’s sensitivity to changes in interest rates.
In: Finance
In: Physics
Describe some of the biggest changes to the US healthcare system made as a result of the passage and implementation of the Affordable Care Act. In your response, address the areas of coverage expansion(s), market reforms, etc. that seek to improve access to care while reducing costs. Based on your understanding of the initiatives you detail, discuss whether or not you believe these policy initiatives to be successful in South Carolina or not while justifying your reasoning.
In: Nursing
How do changes in the fed funds rate impact inflation and unemployment?
In: Economics
Describe Changes Occurring at the Cellular, Tissue, and or Organ Level That Contributes to the Disease Process osteomyelitis
In: Nursing
Phenolphhalein indicator is used in this experiment because it changes color in the pH range of 8.0 to 9.6.
Show by calculation that phenolphthalein is an acceptable indicator for the titration of KHP with NaOH.
This is true if the pH at the equivalence point falls within this range.
In essence, what you need to do is to calculate the pH of the unprotonated phthalate salt. You may assume that the concentration of the salt is approximately 0.05 M at the equivalance point.
HINT: The salt is derived from the weak diprotic acid, which has Ka1 = 1.2 * 10^-3 and Ka2 = 3.9 * 10^-6
In: Chemistry