Ask Question, Ask an Expert


Ask Chemistry Expert

problem 1: The oxidation of oxalic acid by chlorine:

Cl2(aq) + (COOH)2(aq) = 2 CO2(g) + 2 Cl-(aq) + 2 H + (aq)

follows the rate law d[CO2]/dt = k[Cl2][(COOH)2]/[H+]2[Cl-]2

a) Determine the overall order of the reaction? What is the order with respect to Cl2? CO2? Cl-?

b) How is the rate of production of CO2 associated to the rate of loss of Cl2?

c) What rate law would be predicted if one supposes that rate laws can be predicted from stoichiometry? Is this supposition valid in this case? In brief describe.

problem 2: You studied the separation of 4 isomeric alcohols in the gas chromatography experiment. The given peak widths and elution times were observed in a typical run at 60ºC:

Peak number    Elution time (min)    peak width (min)
1                              1.35                         0.10
2                              2.53                         0.19
3                              3.36                         0.23
4                              4.78                         0.30

a) Show whether the peak widths follow the predictions of diffusion theory.

b) Predict the width of a peak which elutes at 6.0 min.

problem 3: The given table gives some significant points on the pressure-temperature phase diagram of nitrogen:

                                     p(atm)         T(K)
triple point                    0.123          63.15
critical point                  33.3978      126.19
normal boiling point      1.00000      77.35
normal melting point     1.0000        63.29

The density of solid nitrogen is 1.03 g/ml and that of liquid nitrogen is 0.808 g/ml.

a) Sketch the phase diagram of nitrogen.

b) Is sublimation possible with nitrogen? Under what conditions?

c) Assume that nitrogen is used to calibrate a thermocouple. What temperature will be used as the calibration point? Justify your preference.

Chemistry, Academics

  • Category:- Chemistry
  • Reference No.:- M93228

Have any Question? 

Related Questions in Chemistry

How can the thermodynamics of dissolution be

How Can the Thermodynamics of Dissolution be Defined? Introduction: The Gibbs-Helmholtz equation expresses the relationship between the free-energy change, ΔG, the enthalpy change, ΔH, and the entropy change, ΔS, at cons ...

Experiment 1 qualitative analysis of unknown ions in a

EXPERIMENT #1: QUALITATIVE ANALYSIS OF UNKNOWN IONS IN A SOLTUION Analysis of an Unknown Individual Pre-lab 1. The main goal/purpose of the experiment is (what are you trying to discover in this lab): a. What are the que ...

Determining chemical formula of a hydratei need the pre lab

Determining Chemical Formula of a Hydrate I need the pre lab and post lab report as same as you did before. The original lab experiment details are attached in pdf. In prelab report, Must answer the Prelab Questions brie ...

The contents of the closed box in each of the following

The contents of the closed box in each of the following illustrations represent a system, and the arrows show the changes to the system during some process. The lengths of the arrows represent the relative magnitudes of ...

Method soil strength and consolidation tests- determination

Method: Soil strength and consolidation tests- Determination of the one-dimensional consolidation properties of a soil-Standard method1 SCOPE This Method describes a procedure for determining the rate and magnitude of co ...

1 assume that you are on a planet whose atmosphere does not

1. Assume that you are on a planet whose atmosphere does not contain carbon dioxide, only nitrogen, oxygen, and water vapor. (a) What would be the pH of the rain at 298K? (b) Lets assume the alien life on the planet live ...

For this picnic you need to feed at least 300 people if you

For this picnic, you need to feed at least 300 people. If you want to feed everyone, but still have equal numbers of buns and hot dogs, what is the minimum number of packages of buns and hot dogs you need, respectively?

Part 1 baking soda to salt experimentnbsppre-labnbspa group

Part 1: Baking Soda to Salt Experiment   Pre-Lab:   A group was doing the chemical reaction to change a carbonate into a chloride. They chose potassium carbonate, and used aqueous hydrochloric acid in the reaction. The p ...

Design problem - fluid properties and Design Problem - FLUID PROPERTIES AND HYDROSTATICS

Design Problem - FLUID PROPERTIES AND HYDROSTATICS Understanding basic fluid properties and hydrostatic equilibrium are foundational components of understanding fluid mechanics. To increase your physical intuition of flu ...

You are working with a chemical process in your factory

You are working with a chemical process in your factory with a Tubular reactor in ADIABATIC conditions. The conversion of compound A at the outlet of your reactor has a value of 50 %. The reaction mechanism of your react ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate