User Account

All Pages

Calculate the ph of the final mixture

Assignment Help Chemistry
Reference no: EM132509041

-A sample of pyrite, FeS2(MW=119.97), contains only inert impurities and weights 0.5080 g. After the sample has been decomposed and dissolved, a precipitate of 1.561 g of BaSO4 (MW=233.40) is obtained. If the calculated percentage of S (MW=32.06) in the sample is 42.21% what weight of ignited precipitate would have been obtained if the Fe (MW=55.85) in the solution had been precipitated as Fe (OH)3and ignited as Fe2O3(MW=159.7)?

-In 100 mL of 0.2 M NH3 solution was added 50 mL of 0.3 M NH4Cl solution. If Kb of NH3 is 1.75 x 10-5, calculate the pH of the final mixture.

-An indicator which is a weak monobasic acid is blue in a strongly acid solution and yellow in a strongly basic one. If Kind is 10 - 10, what is the pH when 40% of the indicator is in the yellow form?

Reference no: EM132509041

Questions Cloud

Concentration of the hydronium ions : Describe what happens to the concentration of the hydronium ions, hydroxide ions, the pH and if the final pH of 1 is possible.
Balanced equation for the reaction of potassium : Potassium forms an oxide with the formula K 2O. What is the coefficient of oxygen in the balanced equation for the reaction of potassium with oxygen to form thi
What is the specific heat of aluminum : What is the specific heat of aluminum if 4,750 joules of heat energy added to 249 g of aluminum produces a recorded temperature change of 21.1 °C?
What is the k for reaction at temperature : At a high temperature, 2.00 mol of HBr was placed in a 5.00 L container where it decomposed according to the equation below. At equilibrium, the concentration
Calculate the ph of the final mixture : A sample of pyrite, FeS2(MW=119.97), contains only inert impurities and weights 0.5080 g. After the sample has been decomposed and dissolved
Calculate value of equilibrium constant at temperature : Calculate the value of the equilibrium constant at this temperature.
Determine the concentration of h2s in mixture : In a certain equilibrium mixture at 25°C, [H+] = [HS-] = 2.7 × 10-4 M. Determine the concentration of H2S in this mixture.
Burning of gasoline to power internal combustion : The burning of gasoline to power internal combustion engines produces water vapor, and carbondioxide gas that is thought to contribute
Determine the value of keq : Phosphorus pentachloride gas decomposes to phosphorus trichloride and chlorine: PCl5(g)?PCl3(g)+Cl2(g) In a certain reaction, 0.500 mol of PCl5

Reviews

Write a Review

Chemistry Questions & Answers

  Explain nitrogen gas reacts with hydrogen gas

Nitrogen gas reacts with hydrogen gas to produce ammonia by the following equation, N2(g)+3H2(g)-->2NH3(g). a) If you have 1.80 mol of H2, how many grams of NH3 can be produced

  Assign absolute configurations to the chiral carbons

Assign absolute configurations to the chiral carbons n one of your Fischer projections. Indicate which of the compounds you have drawn would be optically active. Explain your reasoning.

  Various steps in the process

Describe in detail which form(s) of energy get converted into which other form(s) during the various steps in the process.

  Explain what is density of the block

Blocks mass is 50.0 g in air. while placed in water (20 Celcius, d=.99821 g/cm3), the block only weighs 5.6 grams. Explain what is density of the block

  Explain the balanced cell reaction for the echem cell

What is the balanced cell reaction for the following echem cell set-up. Pt(s) / PbO2(s) / Pb(NO3)2, HNO3 // Cr(NO3)3 / Cr(s)

  Write mathematical equation

Write mathematical equation that show how you will calculate the detected activity from the count rate the sample KCl

  Suppose you wanted to heat a mug of water 250 ml from room

suppose you wanted to heat a mug of water 250 ml from room temperature 25 c to 100 c to make a cup of tea. how much

  Determine the partial pressure of o2

When a container is filled with 3.00 mol of H2 , 2.00 mol of O2 , and 1.00 mol of N2 , the pressure in the container is 465 kPa. determine the partial pressure of O2?

  American multi-national corporation

What kind of problems might occur when an American multi-national corporation tries to expand its business operations to China. Please illustrate your example w

  How many grams of ethyl butrate would be synthesized

Part A Given 7.80 of butanoic acid and excess ethanol , how many grams of ethyl butrate would be synthesized , assuming a complete 100% yield

  What are the advantages and disadvantages of natural product

What are the advantages and disadvantages of natural products as lead compound?

  Compute the volume of oxygen required propane gas

Calculate the volume of oxygen required to burn 5.00 L of propane gas, C3H8, to produce carbon dioxide and water, if the volumes of both the propane

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd