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Does catalyst increase rate of a reaction by increasing activation energy
Calculate the amount of heat released when one bottle (250g) of water is cooled from 30 degrees celcius to 25 degrees celciuis. The specific heat of water is (-4.186J/g degress celcius-).
If 10.0 L of oxygen at STP are heated to 512 degrees C what will be the new volume of gas if the pressure is also increased to 202.6kPa?
I cannot figure out how to upload the excel file.
a. This spreadsheet contains the digital data of six HPLC chromatographic injections (at different flow rates) of the same, two-component mixture through a 15.0 cm, reverse-phase column. For each chromatogram, determine the following;
Peak width at baseline for each peak, w.
Retention time for both peaks, tR.
Adjusted retention time for each peak, tr’.
Capacity factor for both peaks, k’.
Unadjusted relative capacity factor, γ.
Resolution between the peaks, R.
Summarize your results in the table below but you must also submit your work to get full marks.
Flow rate mL/ min 0.05 0.15 0.25 0.50 0.75 1.00
tm / secs. 1008 336 202 101 67 51
w / min
(1st peak)
w / min
(2nd peak)
tR / min
(1st peak)
tR / min
(2nd peak)
tR’ / min
(1st peak)
tR’ / min
(2nd peak)
k’ (1st peak)
k’ (2nd peak)
γ
R
a. This spreadsheet contains the digital data of six HPLC chromatographic injections (at different flow rates) of the same, two-component mixture through a 15.0 cm, reverse-phase column. For each chromatogram, determine the following;
Peak width at baseline for each peak, w.
Retention time for both peaks, tR.
Adjusted retention time for each peak, tr’.
Capacity factor for both peaks, k’.
Unadjusted relative capacity factor, γ.
Resolution between the peaks, R.
Summarize your results in the table below but you must also submit your work to get full marks.
Flow rate mL/ min 0.05 0.15 0.25 0.50 0.75 1.00
tm / secs. 1008 336 202 101 67 51
w / min
(1st peak)
w / min
(2nd peak)
tR / min
(1st peak)
tR / min
(2nd peak)
tR’ / min
(1st peak)
tR’ / min
(2nd peak)
k’ (1st peak)
k’ (2nd peak)
γ
R
The temperature of an ideal gas is doubled from 200 K to 400 K while the volume is kept constant. Aaron was smart and looked up the kinetic theory. Which changes occur to the particles that make up the gas?
Mercury (II) chloride, HgCl , reacts with oxalate ions, C O , as follows:
2
2 HgCl + C O 2- ➞2 Cl-
2 4
1
2 3
0.0788
0.0788 0.0394
-4
-3
-4
2(aq)
2 4 (aq)
(aq)
+ 2 CO 2(g)
0.112
0.224 0.224
+ Hg Cl r =k[HgCl ]m [C O 2-]n
2 2(s) overall
2 2 4
Trial
[HgCl ]
2 initial
(mol/L)
2- [C O ]
2 4 initial (mol/L)
Initial Rate of Reaction
(mol/L·s)
3.950 x 10
1.580 x10 1.975 x10
a) Determine the order (i.e. “m” and “n”) of each reactant. Show all of your work.
2
2 HgCl + C O 2- ➞2 Cl-
2 4
1
2 3
0.0788
0.0788 0.0394
-4
-3
-4
2(aq)
2 4 (aq)
(aq)
+ 2 CO 2(g)
0.112
0.224 0.224
+ Hg Cl r =k[HgCl ]m [C O 2-]n
2 2(s) overall
2 2 4
Trial
[HgCl ]
2 initial
(mol/L)
2- [C O ]
2 4 initial (mol/L)
Initial Rate of Reaction
(mol/L·s)
3.950 x 10
1.580 x10 1.975 x10
a) Determine the order (i.e. “m” and “n”) of each reactant. Show all of your work.
A+B>2C Kp= 4.35 If the reaction is initiated by loading 0.360bar of A in a reaction vessel with 0.350 bar of B determine the concentration of each chemical species once the reaction reaches equilibrium
Calculate the number of mols of copper II sulphate in 50.0cm3 of 1.00moldm3 solution
If the rate of production of HCl is 3.0 X 10-5 M/s at a particular instant. What is the rate of consumption of SnCl4 at this same time?
what quantity is needed to convert between the moles of a given sample of a substance and its mass in grams
