chemistry

PURPOSE
To calculated the different of reaction rate from somes factor
BASIC THEORY
In generally the reaction rates is influenced by concentration reaction for reaction between A and B in the homogeny system, relation between reaction rates with concentration is obviously as follow :
V=k(A)^m (B)^n
Explanation :





Because in is called a concentration of reactant A and n is called a concentration of reactant B , ( m + n ) is called total reaction stage ( orde total ) in this experiment will be obviously increase ( concentration ) of reation at reactan for reaction between natrium triosulfat and acid chloride , based a reaction equation :
Na_2 S_2 O_3(aq) + 2HCl_((aq)) →2NaCl_((aq))+ SO_(2(g))+ S_((s) )+ H_2 O_((l))
Tools and Materials
Tools and materials Size / unit Total
Chemicial Glass 100 mL 3
Measure cylinder 25 mL 2
Stopwatch - 1
Solution of Acid Chloride 1 mL 75 mL
Solution Of Natrium Triosufate 0.5 mL 125 mL
Water / Aquades - 125 mL
Pipete - 3

Steps
Make a cross mark on white paper
Enter the solution of HCl (10 mL , 2 M ) to the chemical glass and put that chemical glass on top of cross mark
Add the solution of Na2S2O3 ( 20 mL , 0.5 M ) and write the time since increased until the cross mark not show again from above solution.
Repeat the experiment with use the solution of Na2S2O3 which is liquided with waterlike on the first table observation.
Repeat the experiment with use the solution of HCl which is liquided with water like on the second table observation.
RESULT

First table
Volume HCl
1M Volume (mL) Molaritas
Na_2 S_2 O_3(aq) Time
(s) 1/((time))
Na_2 S_2 O_3(aq)
0.5 m Aquades Total Volume
10
10
10
10 20
15
10
5 0
5
10
15 30
30
30
30

Second table
Volume
Na_2 S_2 O_3(aq)
0.5 M Volume (mL) Molaritas
HCl
1M Time
(s) 1/((time))
HCl
1M Aquades Total Volume
20
20
20 10
7.5
5 0
0.25
5 30
30
30

Calculated
TASK
Make the graph 1/((time)) toword the molaritas of Na2S2O3
Make the graph 1/((time)) toword the molaritas of HCl
QUESTIONS AND CONCLUTION
On experiment, the reaction rate is measured based on ……………what is it ?
Why the total volume of solution are same ?
Why the graph of reaction rate is draw as 1/((time)) ?
Defined the stage of reaction toword Na2S2O3 and toword HCl ?
How is the formula the rate of reaction ?

Answer :
The raction rate is measured based on molaritas of it’s substances
In order to knows if that changes is ones concentration of substances , not both
Because of 1/t is the formula reaction rate and the reaction rate is compare contrary toword time  V = 1/t
Orde Na2S2O3 =



Orde HCl =