Compute the concentration of k+ ions

Assignment Help Chemistry
Reference no: EM13675879

Presume that 4.258 g of K2Cr2O7 (MW=294.18 g/mol) is dissolved in enough water to make 550mL of solution.

A) Compute the concentration of K+ ions

B) If 15mL of the original K2Cr2O7 solution is transferred to a flask and diluted to 85mL explain what is the concentration of the new solution?

Reference no: EM13675879

Questions Cloud

Find out the molarity of ni in the 20.0ml solution : A 6.26 g sample of a solid containing Ni is dissolved in 20.0mL water. A 5.00mL aliquot of this solution is diluted to 100.0mL as well as analyzed in the lab. The solution was determined to contain 5.16ppm Ni.
Compute the partial pressure of each of the gas components : A laboratory glass bottle utilized in laboratory studies of hypoxia contains gas of the subsequent composition expressed as vol%: O2, 18.0%, N2, 80.0%; CO2 2.0%. a) Compute the partial pressure of each of the gas components. Assume atmospheric pres..
Explain what is more soluble, a solution of free histidine : Explain what is more soluble, a solution of free histidine or a solution of histidine tetrapeptide at pH 6 net charge +2
Compute the ph of a buffer solution prepared by dissolving : Compute the pH of a buffer solution prepared by dissolving a 0.20 mole of cyanic acid (HCNO) as well as 0.80 mole of sodium cyanate(NaCNO) in enough water to make 1.0 liter of solution Ka(HCNO)=2.0*10-4
Compute the concentration of k+ ions : Presume that 4.258 g of K2Cr2O7 (MW=294.18 g/mol) is dissolved in enough water to make 550mL of solution. A) Compute the concentration of K+ ions
State what happens to a proton in a magnetic field : State what happens to a proton in a magnetic field when a RF signal is applied perpendicular or that magnetic field
Presuming that all of the heat evolved in burning : Presuming that all of the heat evolved in burning 11.88 grams of pentane is transferred to 7.91 kilograms of water specific heat = 4.184 J g-1 degC-1 primarily at 23.4 degrees Celsius compute the increase in temperature of the water.
Find out the volume needed to prepare a 7mm concentration : Find out the volume needed to prepare a 7mM concentration of alpha-mercaptoethanol (density= 1.17) in a 1000mL solution
Compute the gravitational constant g : The average density of solids near the surface of the earth is p =4x10-3. On the assumption of a spherical planet of uniform density p, compute the gravitational constant G.

Reviews

Write a Review

Chemistry Questions & Answers

  Explain the molar mass of a compound a boiling point change

What is the molar mass of a compound if 5.96g of the compound dissolved in 25g of chloroform solvent has a boiling point change of 4.80 c. The boiling point constant for chloroform is 3.63 c/m.

  Explain why there are significant color changes that occur

explain why there are significant color changes that occur insubstitution reactions. talk about the origins of color

  Suggest an helpful technique that might be use to conclude

suggest an helpful technique that might be use to conclude total ca2 in a sample of blood. recommend a next process

  Explain what is the ph of a solution obtained by mixing

What is the pH of a solution obtained by mixing 50mL of 0.02 M sodium acetate with 40mL of 0.01 M HCl.

  Explain calcium carbonate and dichloromethane

You are provided a neutral (pH 7.0) aqueous solution of citric acid, caffeine, and triethyl amine. Provide a flow chart for how you would isolate pure caffeine from this mixture using, calcium carbonate, dichloromethane, sodium sulfate(drying), an..

  Explain what is the role of sodium sulfite

What is the role of sodium sulfite? How does it work? Please use an equation to explain this. Why was the work-up step so important in this experiment? What can be found in the top layer, and the bottom layer in the extraction step?

  Predict the formula of the compound the ions produce

Using condensed electron configurations and Lewis electron-dot symbols to depict the monatomic ions formed from each of the following reactants, predict the formula of the compound the ions produce. N and Mg

  What is the heat released

C3H8 + 5O2 reacts to yield 3CO2 + 4H2O +488 kJ What is the heat released if 2.5 moles of C3H8 reacts completely with oxygen?

  Calculate the total number of moles in the solution

A solution of salt (molar mass 90 g mol -1) in water has a density of 1.29 g/mL. The concentration of the salt is 35% by mass.

  State the mole ratio of carbon to hydrogen in the compound

A compound of carbon and hydrogen contains 80% carbon by mass. What is the mole ratio of carbon to hydrogen in this compound

  Explain a strong acid in water

Which bronsted-lowry acid is not considered to be a strong acid in water. A)H I B)H Br C)H2S O3 D)H NO3

  Explain deviation from idealized octahedral structure

Bearing in mind the Jahn-Teller theorem, rank the following compounds in terms of their degree of deviation from idealized octahedral structure- [Cr(CN)6]4-, [Cu(H2O)6]2+, and [Cr(H20)6]3+

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