chem162 kinetics report

8/9/2019 Chem162 Kinetics Report

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Name: Quiz Section:

ID Number: Lab Partner:

Grading: 60 pts. (Lab notebook pages are worth 5 pts - total for report and notebook is 65

Chem 16 !"periment #$: Chemi%al &ineti%s'art : Clo%k *ea%tion'art : Cr+stal ,iolet-+dro"ide *ea%tion

ote: ll se%tions of this report m/st be t+ped.

By signing below you certify t!at you !a"e not falsifie# #ata t!at you !a"e not $lagiarize# any $art ofre$ort an# t!at all calculations an# res$onses ot!er t!an t!e re$orting of raw #ata are your own in#e$wor%& 'ailure to sign t!is #eclaration will result in ( $oints being #e#ucte# from your re$ort score&Signature:

'/rpose and ethod'art : Clo%k *ea%tion(1) dentif+ the p/rpose () pro2ide the rele2ant e3/ations rea%tions and rate law and ($) pro2ide a brie

des%ription of how the rate law is determined (how do +o/ fig/re o/t the orders for rea%h rea%tant4) andrate law for one rea%tion is determined b+ obser2ing a related rea%tion. ($ pts)

'art : Cr+stal ,iolet-+dro"ide *ea%tion(1) dentif+ the p/rpose () pro2ide the rele2ant e3/ations rea%tions and rate law and ($) pro2ide a briedes%ription of how the rate law is determined (how do +o/ fig/re o/t the orders for ea%h rea%tant4). ($ p


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'art : Clo%k *ea%tionto%k ol/tions

oln. Con%. nits

Cl

Table of Recorded Reagent Volumes, Temperature, Time of Reaction, and Calculated Rate

Experiment Test Tube #1 Test Tube #2 Temp.

Run Celsius Time

# mL mL mL mL mL C sec.1

)

3**

+

(

6

,**

-

.

1/

11**

1)

13

1+*

1(*

* 0easurements ma#e wit! a #ro$ of 1&/ m0 mmonium 0olyb#ate

** 2e$eate# measurements for calculating % an# a

#ro$ of 14 Starc! in#icator solution is inclu#e# in eac! run&

7

$-

-

8r7$

-

H2 !

2

"2

$ %r"

H&

'ata, Calculations and (rap)s

S!ow your calculation for t!e 52ate5 !ere using #ata for */n #1:


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Table of Recorded Temperature, $nitial Concentrations, Time of Reaction, and Calculated RExperiment Temp $nitial Concentrations *+ Time Rate

Run # Celsius sec +-sec

Run 1

Run 2

Run "

Run

9-a"is -a"is

log(*ate)

!2

"2

$ H& %r"

log(-)

Reaction rder 'etermination for $

S!ow your calculation for t!e concentration of Br37use# in */ns 1-;:

*!< = 8!>7*! '*7C!!


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2oun# to t!e nearest w!ole number&

If no tren#line eAuation is $ro"i#e# on t!e $lot no cre#it will be gi"en for your answer to t!is Auestion&

?hat is the order with respe%t to -

as determined from +o/r data4


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Table of Recorded Temperature, $nitial Concentrations, Time of Reaction, and Calculated R

Experiment Temp $nitial Concentrations *+ Time Rate

Run # Celsius sec +-secRun /

Run 0

Run

Run

3axis 4axis

log(*ate)



!2

"

2

$

H& %r

"

log*%r"

?hat is the order with respe%t to 8r7$

-as determined from +o/r data4

Reaction rder 'etermination for %r"

'la%e +o/r plot relating to the rea%tion order for 8r7$-here making it large eno/gh to %o2er this

bo" (so that it is eas+ to read).

2efer to t!e te@t bo@ abo"e for !ints about w!at to $lot&

'2 'LL C2DI=:

7 $lot t!e correct #ata on eac! a@is

7 correctly label eac! a@is an# format t!e a@is suc! t!at t!e #ata being $lotte# fills t!e maority of t!e gra$! >a@es #o N= nee# tstart at /?

7 a$$ro$riately title t!e $lot

7 use @cel to a## a tren#line for t!e #ata&&&be sure to c!oose t!e tren#line o$tions t!at 5#is$lay eAuation on c!art5 an# 5#is$lay27sAuare# on c!art5


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Table of Recorded Temperature, $nitial Concentrations, Time of Reaction, and Calculated R

Experiment Temp $nitial Concentrations *+ Time Rate

Run # Celsius sec +-sec

Run 5

Run 16

Run 11

Run 12

3axis 4axis

log(*ate)



!2

"2

$ H& %r"

log*H&

?hat is the order with respe%t to @as determined from +o/r data4

Reaction rder 'etermination for H&

'la%e +o/r plot relating to the rea%tion order for @here making it large eno/gh to %o2er thisbo" (so that it is eas+ to read).

2efer to t!e te@t bo@ abo"e for !ints about w!at to $lot&

'2 'LL C2DI=:


7 correctly label eac! a@is an# format t!e a@is suc! t!at t!e #ata being $lotte# fills t!e maority of t!e gra$! >a@es #o N= nee#to start at /?


7 use @cel to a## a tren#line for t!e #ata&&&be sure to c!oose t!e tren#line o$tions t!at 5#is$lay eAuation on c!art5 an# 5#is$lay27sAuare# on c!art5


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Table of $nitial Concentrations, Time of Reaction, Calculated Rate, and Calculated 7

Experiment $nitial Concentrations *+ Time Rate 7

Run # sec +-sec

Run "

Run

Run 11

& 89erage:

!td 'e9iation:

;nits:

Table of Temperature, $nitial Concentrations, Time of Reaction, and Calculated Rate

8cti9ation Energ


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Run 1/

7?-mol

'art : Cr+stal ,iolet-+dro"ide *ea%tion

Con%entration of sto%k sol/tions

to make 5 mL of 1.0 " 10-5 C,@ is

mL

Calibration C/r2e


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1.5 1 0.5 $ 5.00!-06 0.0500

$ 1 1.5 0.5 $ 5.00!-06 0.0$$$

; 0.5 0.5 $ 5.00!-06 0.016B

and the initial %on%entration for the start of the rea%tions

C,@Dfand a7D

fare the final %on%entrations after all reagents are mi"ed

regress


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*/n 1

=ime (s) bsorban%e

K!ic! $lot on t!e ne@t $age is t!e most linear

Base# on t!e $lots you create# on t!e ne@t $age w!at is t!e or#er of t!is reaction wit! res$ect to CH9

* #1

K!at is t!e "alue of t!e slo$e for t!e most linear $lot

C,@Dt

lnC,@Dt

1HC,@Dt

ionva

lueswhendeterminingk.

S!ow your calculation of t!e ;CH9< at t!e first timepoint in */n #1:

RE8' TH$! %EBRE RCEE'$D('or e"aluating t!e #ata for 2un 1 enter your time an# absorbance "alues as recor#e# in your lab noteboo%#uring lab in columns an# B res$ecti"ely& In column C con"ert t!e aborbance "alues to concentrationaccor#ing to t!e e@am$le you $ro"i#e# at t!e to$ of t!is $age& In column D con"ert t!e ;CH9< "alues fromcolumn C to ln ;CH9


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K!at is t!e $sue#o7rate constant >%M? for t!is reaction


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'la%e +o/r plot of 1HC,@D 2s time here making it large eno/gh to %o2er this bo" (so that it iseas+ to read).

'2 'LL C2DI=:


7 correctly label eac! a@is an# format t!e a@is suc! t!at t!e #ata being $lotte# fills t!e maority of t!e gra$! >a@es #o N=nee# to start at /?


7 use @cel to a## a tren#line for t!e #ata&&&be sure to c!oose t!e tren#line o$tions t!at 5#is$lay eAuation on c!art5 an#5#is$lay 27sAuare# on c!art5&

'la%e +o/r plot of lnC,@D 2s time here making it large eno/gh to %o2er this bo" (so that it iseas+ to read).

'2 'LL C2DI=:




7 use @cel to a## a tren#line for t!e #ata&&&be sure to c!oose t!e tren#line o$tions t!at 5#is$lay eAuation on c!art5 an#5#is$lay 27sAuare# on c!art5

'la%e +o/r plot of C,@D 2s time here making it large eno/gh to %o2er this bo" (so that it is eas+to read).

'2 'LL C2DI=:




7 use @cel to a## a tren#line for t!e #ata&&&be sure to c!oose t!e tren#line o$tions t!at 5#is$lay eAuation on c!art5 an#5#is$lay 27sAuare# on c!art5


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Note: in row +6) of columns D an# I $ro"i#e t!e correct column title base# on w!at #ata you are enteri

*/n */n $

=ime (s) bsorban%e =ime (s) bsorban%e

* #



* #$



C,@Dt

C,@Dt


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Note: in row (13 of column D $ro"i#e t!e correct column title base# on w!at #ata you are entering&

*/n ;

=ime (s) bsorban%e

* #;



*/n # kI ln(kI)

1 slope +-int

$

;

C,@Dt

7-D ln7-D ln(kI) 2s. ln(7-D)

Reaction rder 'etermination for H

S!ow your calculation of t!e rate constant for t!e o"erall reaction&

Consult t!e 58el$ful Information5 section in t!e intro#uctory $ages for t!is e@$eriment in t!e lab manual for !el$wit! t!is last section of #ata analysis& s you #i# in t!e $re"ious secion for t!e slo$e an# y7interce$t calculationsyou will again use t!e functions in @cel rat!er t!an creating a $lot&


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*ate %onstant for the o2erall rea%tion k:

nits for k:

7rder of the rea%tion with respe%t to 7-D:

*es/lts and


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en"ironment& Base# on t!e written lab $roce#ure andyour actions #uring t!e lab list t!e i#entity an# a$$ro@imate>mass or "olume? of waste t!at you generate# w!ile $erforming t!is e@$eriment&


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pts)

t!is laben#ent

how the

ts)


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($ pts)

Rate

+-s

( pts)


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(1 pts)

ate

(5 pts)"

o


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(1 pt)


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ate

(1 pt)


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ate

(1 pt)


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( pts)

(1 pt)

($ pts)


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( pts)

($ pts)

(1 pt)

(1 pt)

1

B TH$!

you will t!en

of time

reaction at

!e or#erNC=INSon t!e cell

s& =!is is a

9& ncee runs towill also


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( pts)

(1 pt)

(1 pt)

(1 pt)


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(1 pt)


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g&

(1 pt)

(1 pt)


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(1 pt)

( pts)


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( pts)

pt)

error

t)

t)

ther4 s)

t.

al%/late

t!rown in


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amount

chem162 kinetics report

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