Rate Of Reaction
Akopọ
Some reactions are over in a flash, like an explosion, while others, like iron rusting, take years. The rate of reaction measures how fast reactants turn into products, and chemists can speed it up or slow it down by changing the conditions.
In this lesson you will learn what rate of reaction means, how collision theory explains it, and how concentration, surface area, temperature and catalysts change the rate. You will also see how the slope of a graph shows the rate as a reaction proceeds.
Awọn Afojusun
- Describe the effect on the rate of reaction of: (a) changing the concentration of solutions (b) changing the pressure of gases (c) changing the surface area of solids (d) changing the temperature (e) adding or removing a catalyst, including enzymes.
- State that a catalyst increases the rate of a reaction and is unchanged at the end of a reaction.
- Describe practical methods for investigating the rate of a reaction including change in mass of a reactant or a product and the formation of a gas.
- Interpret data, including graphs, from rate of reaction experiments.
- [Supplement] Describe collision theory in terms of: (a) number of particles per unit volume (b) frequency of collisions between particles (c) kinetic energy of particles (d) activation energy, E a.
- [Supplement] Describe and explain the effect on the rate of reaction of: (a) changing the concentration of solutions (b) changing the pressure of gases (c) changing the surface area of solids (d) changing the temperature (e) adding or removing a catalyst, including enzymes using collision theory.
- [Supplement] State that a catalyst decreases the activation energy, E , of a reaction a.
- [Supplement] Evaluate practical methods for investigating the rate of a reaction including change in mass of a reactant or a product and the formation of a gas.
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Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Rate Of Reaction. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- For a reaction to occur, particles must collide with: A. Any energy at all B. At least the activation energy C. No energy D. Equal masses Answer: B
- Increasing the concentration of a reactant increases the rate because: A. The particles are heavier B. There are more frequent collisions C. The activation energy falls D. The temperature rises Answer: B
- Powdering a solid reactant speeds up the reaction because it: A. Lowers the temperature B. Increases the surface area C. Adds a catalyst D. Removes collisions Answer: B
- A catalyst increases the rate of reaction by: A. Being used up B. Raising the activation energy C. Lowering the activation energy D. Cooling the mixture Answer: C
- On a graph of product formed against time, the rate is greatest where the slope is: A. Flattest B. Steepest C. Negative D. Zero Answer: B
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
Awọn Iwe Itọsọna Ti a Gba Nimọran
Ẹ̀kọ́ síwájú láti àwọn orísun ṣíṣí
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Abala ìwé ẹ̀kọ́
Factors Affecting Reaction Rates
Describe the effects of chemical nature, physical state, temperature, concentration, and catalysis on reaction rates
"Chemistry: Factors Affecting Reaction Rates" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/chemistry/pages/12-2-factors-affecting-reaction-rates. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
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Abala ìwé ẹ̀kọ́
Collision Theory
Use the postulates of collision theory to explain the effects of physical state, temperature, and concentration on reaction rates
"Chemistry: Collision Theory" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/chemistry/pages/12-5-collision-theory. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
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Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Rate Of Reaction? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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