Explain the unreacted naoh in the reaction mixture

Assignment Help Chemistry
Reference no: EM13499644

A 0.484g sample of impure NH4Br is treated with 25.00mL of 0.2050 M NaOH and heated to drive off the NH3. The unreacted NaOH in the reaction mixture after heating required 9.95mL of 0.0525 M H2C2O4 to neutralize.

a) How many grams of NH4Br were in the original sample?

b) What is the percentage NH4Br in the original sample?

Reference no: EM13499644

Questions Cloud

Define a free particle of mass m in a one-dimensional box : A free particle of mass m in a one-dimensional box with infinite walls at x=0 and x=L, given by the potential function: V(x)= 0 for x =0 L
What is vertical component of her acceleration : A skier is accelerating down a 30 degree hill at 2.00 m/s squared. what is vertical component of her acceleration
Calculate the mass of liquid : 0.14 kg of water at 88.0 deg C is poured into an insulated cup containing 0.234 kg of ice initally at 0 deg. Calculate the mass of liquid
What is the magnification of the image of an object : A spherical Christmas tree ornament is 3.84 cm in diameter. What is the magnification of the image of an object placed 11.1 cm away from the ornament
Explain the unreacted naoh in the reaction mixture : A 0.484g sample of impure NH4Br is treated with 25.00mL of 0.2050 M NaOH and heated to drive off the NH3. The unreacted NaOH in the reaction mixture after heating required 9.95mL of 0.0525 M H2C2O4 to neutralize.
Summarise developments and changes in financial report : Prepare a 2 page newsletter that identifies and summarises developments and changes in the financial reporting environment for the period 24 July 2014 - 22 August 2014, inclusive.
Calculate how high must the person climb : A 78.3 kg weight-watcher wishes to climb a mountain to work off the equivalent of a large piece of chocolate cake rated at 522 (food) Calories. How high must the person climb
Find the frictional force impeding its motion : A 15.0 kg box is released on a 30 degree incline and accelerates down the incline at 0.30 m/s squared. Find the frictional force impeding its motion
Explain the carbon concentration at the carbon-rich surface : After it reaches steady state, the iron is quickly cooled to room temperature. The carbon concentration at the carbon-rich surface is determined to be 8.415x10^0 at%

Reviews

Write a Review

Chemistry Questions & Answers

  A 256 g sample of pure iron at 66degc is dropped into 65 g

a 25.6 g sample of pure iron at 66degc is dropped into 65 g of water at 33degc. what is the final temperature of the

  Explain how many moles of naoh must be added to hc2h3o2

How many moles of NaOH must be added to 1.0 L of 1.2 M HC2H3O2 to produce a solution buffered at each pH? a) pH=3.87 b) pH=5.24

  Compute the initial effusion rate

Calculate the initial effusion rate. If this rate continued how much time would pass until the pressure dropped to 0.90 bar? (actually the rate changes with pressure- indicated why using the equations). assume values for nitrogen

  Compute the potential delivered by a voltaic cell operating

Calculate the potential delivered by a voltaic cell operating by the following reaction if all of the dissolved species have a concentration of 0.035 and the pressure of H2 (g) is 1.00 atm.

  Calculate the heat loss to the inner 2.35-g styrofoam cup

Heat is lost to the styrofoam calorimeter. Assuming a 6.22 C temperature change for the reaction of HCl(aq) with NaOH(aq), calculate the heat loss to the inner 2.35-g styrofoam cup. The specific heat of styrofoam is 1.34 J/gC.

  Explain substances will have the highest temperature change

Assuming the same mass of each, which of the following substances will have the highest temperature change if they all absorb the same amount of heat Gold

  State the carbonyl compound nucleophile or electrophile

Part 2 In a substituent reaction will the leaving group (L=Cl- ) be substitute by a new substituent. Is the substituent in the carbonyl compound nucleophile or electrophile? Argue according to your answer in part 1.

  Define what are spectator ions

The Ka of acetic acid is 1.8 x 10-5 Using the above equation, what is the pH of this solution? What are spectator ions and what effect do they have on the pH of water

  Explain the vmax and the km of an enzyme

When the Vmax and the Km of an enzyme are not known, it is essential to determine the enzyme's initial velocity (Vo) at different [S]. To determine the initial velocity, one would have to: Select one: a. Use the Michaelis Menten equation

  Explain the carbon converted to co per kg coal

A coal containing 81% C, with a calorific value 32,400 kJ/kg is burnt to produce a flue gas of the following composition: CO2=10.4%, CO= 1.4%, O2= 5.5 % and the rest is nitrogen. Determine the carbon converted to CO per kg coal.

  Define the solution prior to the initiation of the titration

If 37.5 mL of 0.274 M HCl solution is needed to neutralize an aqueous solution of calcium hydroxide, how many grams of calcium hydroxide must be in the solution prior to the initiation of the titration experiment

  Explain what would be the concentrations of acetic acid

What would you expect to happen if you combined 10.0mL of 10^-2 M acetic acid and 5.0mL of 10^-2 M sodium hydroxide? What would be the concentrations of acetic acid and sodium acetate in this solution

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