• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3

# How does the change in temperature affect the rate of reaction?

Extracts from this document...

Introduction

Temperature affecting Reaction Rates * Guiding Question: How does the change in temperature affect the rate of reaction? * Objectives: The objective of this experiment is to see how temperature affects reaction rates. * Hypothesis: We think that temperature increases the rate of reaction because the increase in temperature increases the energy of the particles and therefore overcomes faster the activation energy. * Variables: 1. Independent: Temperature (�C) 2. Dependents: Time (s) and rate of reaction (s -1) 3. Control: Volume (ml) and concentration (M) of HCl and Na2S2O3. * Procedure: a) ...read more.

Middle

f) Repeat the experiment twice for each temperature and find the average. * Materials: i. 2 measuring cylinder (50 ml) ii. Thermometer 10 �C - 110 �C iii. Chronometer iv. 2 flasks (250 mL) v. 60 ml of a 2M solution of HCl vi. 600 ml of a 0.04 M solution of Na2S2O3 * Observation: Sodium Thiosulfate ions (0.04 M) with different temperatures �C mL HCL (2M) Time to disappear of "X" (s) Average Time (s) Rate of Reaction n (s-1) 18.5 5 243 255 249 0.00401 30 5 60 46 53 0.01886 40 5 28.62 25.04 26.83 0.03727 50 5 24.38 22.46 23.42 0.04269 60 5 10.87 14 12.44 0.08038 * ...read more.

Conclusion

Some problems during the experiment were that we just have one hot plate so we loose time waiting for the other team to finish with their results. It was complicated because we couldn't have enough space to record everything that was happening because there were two groups per table. A solution to this problem is that for that specific part when we need the hot plates, we can share the data obtained in the whole table members. So we can continued the experiment at a faster rate so we can start doing more researches for the conclusion. And in this way the observations would have been more accuracy for both groups. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Chemistry section.

## Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

# Related International Baccalaureate Chemistry essays

1. ## How duration affects the rate of electrolysis in a Voltaic Cell

On the other hand, copper undergoes reduction at the cathode and the copper 2+ ions get converted to copper metal. This causes the copper metal to be deposited at the cathode thus leading to the copper electrode (cathode) to increase in mass as the duration is increased.

2. ## Investigate the rate of reaction of luminol in various factors. The objective was to ...

Add water to the area, followed by mineral absorbent. Disposal Dissolve in 5 litres of water and wash to waste. Hydrogen Peroxide (H2O2) Corrosive Any solution stronger than or equal to 5.9M (i.e., 20% or 71'vol') is corrosive and causes burns. Solutions stronger than or equal to 1.5M (i.e.

1. ## The rate of reaction between sodium thiosulfate and hydrochloric acid

* Standard ranges and repetitions are met, a very strong positive correlation between the concentration of sodium thiosulfate and the rate of reaction is observed. * Qualitative observations, along with quantitative investigation successfully prove that the expectations based on scientific knowledge are totally correct.

2. ## Enthalpy Change of a Displacement Reaction

Approximately the temperature should be 38.5? ?T=38.5?-19.8? =18.7? Absolute uncertainty=�0.5? + �0.5?=�1? % uncertainty=1/18.7 � 100%=5% c)The heat absorbed by the solution. (Assume the Ssolution=Swater=4.18J/ g?) Heat released=m�s�?T =100g�4.18 J/g?�18.7? =7.81�103J =7.8kJ % uncertainty=1%+5%=6% (Assume that the absolute uncertainty of the specific heat of water is negligible) Absolute uncertainty=7.8kJ�6%=0.5kJ 2.

1. ## Research Question Will increasing the temperature (C) of the rennin enzyme affect the ...

Research Question Will increasing the temperature (�C) of the rennin enzyme affect the rate of reaction (seconds) at which Pauls full cream milk solidifies? Hypothesis It is hypothesised that increasing the temperature of the rennin enzyme will increase the rate of the reaction at which Pauls full cream milk solidifies.

2. ## Factors Affecting Rate of Reaction

When the surface area of the tablet was increased by crushing it into a powder, the rate of reaction decreased 5 times. These results do not make sense since according to the collision model, a solid in a solution can only react when particles collide with the surface.

1. ## Reaction Rate

and place through inverted cylinder (side without rubber stopper). This should not be difficult, as water pressure of plastic container will keep 100mL in measuring cylinder whilst tube is being inserted.

2. ## Determining the of the Effect of the Concentration of Na2S2O3 on the Rate of ...

For the first solution, we apply the equation, and thus we do: (10.0cm³/50.0cm³)*0.2 ï 0.04M. As for the uncertainty here, we must add the fractional uncertainty in the volume of sodium sulfate and total volume, and then multiply it by the concentration.

• Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to