Explain few drops of phenolphthalein indicator

Assignment Help Chemistry
Reference no: EM13156234

In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL of acid in a flask. You quickly add 23.75 mL of 0.0502 M NaOH but overshoot the end point, and the solution turns deep pink. Instead of starting over, you add 30.50 mL of the acid, and the solution turns colorless. Then, it takes 3.88 mL of the NaOH to reach the end point. What is the concentration (M) of the HNO3 solution? How many moles of NaOH were in excess after the first addition? Can you work out the steps?

Reference no: EM13156234

Questions Cloud

What do these observations reveal about the mechanisms : XYY humans are fertile males. XXX humans are fertile females. What do these observations reveal about the mechanisms of sex determination and dosage compensation?
Improved organizational communication : Mediated communication and social media (e.g., email, blogs, Facebook, Skype, and Twitter) have played a major role in changing the way that organizations engage in communication with their customers and with employees internally. As we have learn..
Differences between the spines of warm-water and cold-water : Spiny species of diatoms are found in both warm subtropical waters and colder areas. Because warm water is less dense than cold water, would you predict any differences between the spines of warm-water and cold-water individuals? Why?
Difference in mean number of months before raise granted : At the .05 level of significance, is there a difference in the mean number of months before a raise was granted among the four CPA firms?
Explain few drops of phenolphthalein indicator : In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL of acid in a flask. You quickly add 23.75 mL of 0.0502 M NaOH but overshoot the end point
Explain these observations taking into consideration : The three homeodomain proteins ABD-B, ABD-A, and UBX are encoded by genes within the BX-C of Drosophila.
Science blogs website and read the blog : Go to the Science Blogs Website and read the blog post titled "Dichloroacetate and cancer". Explain how the blog post ties in with this week's lessons. Indicate three (3) significant ways this post tells us about the link between metabolism, apoptosi..
What volume will the gas occupy : a sample of oxygen gax occupies a volume of 250ml at 740 torr presure, what volume will it occupy at 800 torr pressure?
Chemiluminescence reaction will actually occur very slowly : Your chemiluminescence reaction will actually occur very slowly in air. What component of air will bring about this reaction and what is its approximate concentration in air? If you had a stoppered flask with basic luminol and then opened it to th..

Reviews

Write a Review

 

Chemistry Questions & Answers

  How many milliliters of 5.00 m hcl solution are needed

How many milliliters of 5.00 M HCl solution are needed to provide the 1.50 moles of HCl needed for a reaction?

  When phenylpropanoic acid undergoes eliminiation

Erythro-2,3-dibromo-3-phenylpropanoic acid undergoes eliminiation by an E1 pathway in water solvent (Part A conditions),

  Explain gaseous acetic acid

What is the heat change in J associated with 65 g of gaseous acetic acid at 127 oC changing to solid at -50 oC? c(acetic acid) (g) = 1.11 J/(g.K) c(acetic acid) (liq) = 2.18 J/(g.K) c(acetic acid) (s) = 1.32 J/ (g.K) ?Hfus(acetic acid) = 192 J/g ?..

  Alkenes contain double bonds while alkynes contain triple

Alkenes contain double bonds while alkynes contain triple bonds, Naming compounds containing double as well as triple bonds

  Calculate the heat released

calculate the heat released when 166g of water at 23 degrees celcius is converted to ice at negative 10 degrees celcius

  What is the vapor pressure of acetone

The gas plus vapor at its equilibrium partial pressure leaves the liquid at the same temperature and pressure. If 6.550 g of acetone has evaporated, what is the vapor pressure of acetone at 25 degrees Celsius?

  What would the net atp yield

What would the net ATP yield if a muscle cell takes a glucose molecule, stores it as part of a glycogen molecule and later releases it and sends it through glcolysis.

  What concentrations are needed

Using phosphoric acid, what concentrations are needed to give a pH 8.10 solution with an ionic strength of 0.100 M?

  How do you write orbital diagrams

How do you write orbital diagrams in an a (arrow diagrams) for the following elements: 26Fe, 34Se, 36Kr I d

  Discussion on bonding theories

What are bonding theories? Why are they important? What may they be used for. HI has a force contents of 314 Nm^-1 and a bond length of 160.92 pm.

  How much heat was released by the reaction

when 50 mL of water containing .5 mol HCL at 22.5 degrees C is mixed with 50.0 mL of water at 25 degrees C in a calorimiter, the temperature of the solution increases to 26 degrees C. How much heat was released by this reaction?

  Describe at least four methods to separate the oil and water

Describe at least four methods that could be used to attempt to separate the oil and water at home. Based on the four methods postulate which method would work better than the others.

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