We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy

The Rate Reaction Between Sodium Thiosulphate And Hydrochloric Acid

The purpose of this experiment is to analyze the rate of reaction and the different parametric quantities that affect it. In this experiment, we will be look intoing the consequence of temperature on the reaction between Sodium Thiosulphate and Hydrochloric Acid.

Theory:

Chemical reactions involve hits between reactant molecules or atoms to from bonds. For this, the molecules or atoms are required to come near to one another since new bonds can organize merely when the reactants are near plenty to portion negatrons or ease a transportation of negatrons. Collisions that lead to merchandises are referred to as effectual hits which consequences when the hits occur with adequate velocity energy and force to interrupt bonds of the reactants.

We will write a custom essay on The Rate Reaction Between Sodium Thiosulphate And Hydrochloric Acid specifically for you
for only $16.38 $13.9/page

Order now

The minimal energy reactants need to possess to interrupt bonds and do a reaction is known as activation energy. Therefore there are two ways of increasing the rate of reaction:

increase the figure of hits

increase the sum of motion ( kinetic ) energy so that more hits lead to a reaction.

These depend on a figure of factors:

Size of atoms

Concentration

Temperature

Addition of a accelerator

Pressure of a gaseous reactant

This experiment trades with the consequence of one of these factors-concentration of reactants.

Increasing concentration, increases the chance of hits between the reactant as there are more of them available for interaction in the same sum of the solution mixture. Since the chance of the hits is higher, the chance of effectual hits increases excessively.

The purpose of this experiment to analyze and look into the consequence of this factor, on the rate of reaction between Na thiosulphate and hydrochloric acid.

The reaction between Na thiosulphate and hydrochloric acid returns to the undermentioned chemical equation:

Na2S2O3 ( aq ) + 2HCl ( aq ) A® 2NaCl ( aq ) + SO2 ( aq ) + H2O ( cubic decimeter ) + S ( s )

This equation can besides be represented in the ionic-equation signifier in the undermentioned mode:

S2O32- + 2H+ A® H2O + SO2 + S

The sulfur dioxide therefore formed is dissolved in H2O as sulfurous acid. The partly dissolved sulfur makes the solution turbid due to the formation of a colloid. Because of this, the solution turns more soiled and opaque as the liberated sulfur additions in measure. This belongings is used in the experiment to find the rate of the reaction.

Hypothesis:

It can be hypothesized that an addition in the concentration of the Na Thiosulphate would increase the rate of the reaction. Quantitatively, if the concentration of Na2S2O3 is increased by a factor of two, so the clip taken for the reaction to happen will lessening by a factor of two. This is tantamount to increasing the reaction rate by a factor of two.

Variables

Controlled: Factors like force per unit area, temperature, surface country of atoms and the proportion of atoms with regard to each other, that affect the rate of the reaction must be maintained.

Mugwump: Concentration of the reactants

Dependant: The rate of the reaction as the clip taken for the reaction to take topographic point would depend on the concentration.

READ:  Academic Qualification Ensures Success in Life Essay

Requirements:

Chemicals:

1 M Na thiosulfate solution

1 M HCl solution

distilled or deionized H2O

Equipment:

250-mL beakers

stirring rods

25-mL graduated cylinder

stop watch

Procedure

Prepare 5 beakers with different concentrations of Sodium Thiosulfate age-related macular degeneration Hydrochloric Acid by fixing 25ml solutions in the undermentioned mode:

Beaker

Number

Volume of

Sodium Thiosulfate

( milliliter )

Volume of

distilled or deionized H2O

( milliliter )

1

25

2

20

5

3

15

10

4

10

15

5

5

20

Make a little “ ten ” on a sheet of white paper with a pencil. Put the 1st beaker incorporating the Na thiosulfate solution over this “ ten ” and add 5 mL HCl solution and instantly get down clocking the reaction.

Stir the contents of the flask and enter the clip taken for the cross to be obscured by the sulfur precipitate formed and enter this clip in your informations tabular array.

Repeat this process for the staying samples.

Make a graph of the informations obtained by plotting the clip ( in sec ) for each reaction on the y-axis against the volume ( in milliliter ) of Na thiosulfate on the x-axis.

Data Collection:

S.No

Beaker No.

Volume of

Sodium Thiosulfate

( milliliter )

Volume of

distilled or deionized H2O

( milliliter )

Time / +0.01s

Chemical reaction Rate ( 1/t ) / +0.01s-1

1.

1

25

18

0.0560

2.

2

20

5

23

0.04340

3

3

15

10

31

0.03220

4.

4

10

15

56

0.02000

5.

5

5

20

112

0.00087

Data Presentation and Analysis

Datas Analysis:

The graph above corresponds to our hypothesis as the relation between the rate of reaction and the concentration of reactants is relative to the concentration of one peculiar reactant. This is due to the increased opportunities of fruitful hits ensuing in merchandises. in this instance, the reciprocal of the reaction clip, 1/time, is being used to mensurate the velocity of the reaction and represents how long it takes for a certain concentration of sulfur to organize when the hydrochloric acid is added to the Na Thiosulphate. The rate of reaction i.e. the clip taken for the reaction to happen therefore is seen to increase with an addition in the concentration of one of the reactants.

Restrictions:

The graph above is best fitted to our consequences which means that the experimental consequences had a grade of inaccuracy. This could hold been due to the undermentioned grounds:

Impurities in the reactants can impact the rate of reactions and inaccurate clip periods.

The least count of the measurement cylinder used to mensurate solution is 0.05cm3. the volumes measured are hence non precise. Due to this, the volumes of solutions measured might be inaccurate taking to inaccurate concentrations.

Since our research lab was air-conditioned, the reaction mixture could hold undergone uneven and sudden chilling.

The reaction clip when fillet and get downing the stop watch besides added to the inaccuracy particularly when the clip periods are truly little.

Alterations:

To get the better of the restrictions and give more accurate consequences, we can modify the experiment in the undermentioned ways:

A burette or a pipette could be more accurate in mensurating the volumes of solutions.

The experiment must be carried out at a distance from the air-conditioner to forestall rapid chilling of the solutions and keep a changeless temperature.

A purer solution can be made by utilizing better quality of the Na Thiosulphate.

Every person ‘s definition of the disappearing of the cross could be different. To get the better of this, an index could hold been used to bespeak the completion of reaction.

Precautions:

To minimise inaccuracy, the undermentioned safeguards were incorporated in the experiment:

The H2O bath is really hot and so the beaker with the hot acid must be handled excess carefully or it could be unsafe.

The acid must be handled with attention.

It is best that one individual clip during the whole of the reaction to cut down the mistake due to reaction clip.

READ:  Lymphoma Essay

Decision:

At the terminal of this experiment, it can be concluded that the concentration does hold an consequence on the clip taken for the reaction and accordingly on the rate of reaction. More specifically, an addition in concentration leads to an addition in the rate of reaction. The undermentioned decisions can hence be drawn:

Concentration Aµ / ____________ 1________________

clip taken for reaction to be complete

Concentration Aµ Rate of reaction

Choose Type of service

Choose writer quality

Page count

1 page 275 words

Deadline

Order Essay Writing

$13.9 Order Now
icon Get your custom essay sample
The Rate Reaction Between Sodium Thiosulphate And Hydrochloric Acid
Artscolumbia
Artscolumbia
The purpose of this experiment is to analyze the rate of reaction and the different parametric quantities that affect it. In this experiment, we will be look intoing the consequence of temperature on the reaction between Sodium Thiosulphate and Hydrochloric Acid. Theory: Chemical reactions involve hits between reactant molecules or atoms to from bonds. For this, the molecules or atoms are required to come near to one another since new bonds can organize merely when the reactants are near p
2019-06-08 04:43:33
The Rate Reaction Between Sodium Thiosulphate And Hydrochloric Acid
$ 13.900 2018-12-31
artscolumbia.org
In stock
Rated 5/5 based on 1 customer reviews