This is a summary of the topic "Speed of reactions" in the GCE O levels subject: Chemistry. Students taking either the combined science (chemistry/physics) or pure chemistry will find this useful. These slides are prepared according to the learning outcomes required by the examinations board.
This is a summary of the topic "Speed of reactions" in the GCE O levels subject: Chemistry. Students taking either the combined science (chemistry/physics) or pure chemistry will find this useful. These slides are prepared according to the learning outcomes required by the examinations board.
The rate of reaction is the speed at which a reaction proceeds. The factors that affect the rate of a chemical reaction are : nature of reactants, temperature, concentration, size of particle and catalyst.
The rate of reaction is the speed at which a reaction proceeds. The factors that affect the rate of a chemical reaction are : nature of reactants, temperature, concentration, size of particle and catalyst.
Perhatian kepada pelajar yang akan mengambil peperiksaan pada tahun 2013 ini, cikgu berharap agar kamu semua dapat menggunakan soalan analisis ini sebaik mungkin. Analisis ini telah cikgu kaji dari tahun ke tahun sebelumnya. Tolong fokus tajuk ini sebaik mungkin.
Numerical Analysis of Inlet Gas-Mixture Flow Rate Effects on Carbon Nanotube ...A Behzadmehr
The growth rate and uniformity of Carbon Nano Tubes (CNTs) based on Chemical Vapor Deposition (CVD)
technique is investigated by using a numerical model. In this reactor, inlet gas mixture, including xylene as
carbon source and mixture of argon and hydrogen as carrier gas enters into a horizontal CVD reactor at
atmospheric pressure. Based on the gas phase and surface reactions, released carbon atoms are grown as CNTs on the iron catalysts at the reactor hot walls. The effect of inlet gas-mixture flow rate, on CNTs growth rate and its uniformity is discussed. In addition the velocity and temperature profile and also species concentrations throughout the reactor are presented.
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Enterprise excellence and inclusive excellence are closely linked, and real-world challenges have shown that both are essential to the success of any organization. To achieve enterprise excellence, organizations must focus on improving their operations and processes while creating an inclusive environment that engages everyone. In this interactive session, the facilitator will highlight commonly established business practices and how they limit our ability to engage everyone every day. More importantly, though, participants will likely gain increased awareness of what we can do differently to maximize enterprise excellence through deliberate inclusion.
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Dr. William Harvey is a seasoned Operations Leader with extensive experience in chemical processing, manufacturing, and operations management. At Michelman, he currently oversees multiple sites, leading teams in strategic planning and coaching/practicing continuous improvement. William is set to start his eighth year of teaching at the University of Cincinnati where he teaches marketing, finance, and management. William holds various certifications in change management, quality, leadership, operational excellence, team building, and DiSC, among others.
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[Note: This is a partial preview. To download this presentation, visit:
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Leading companies such as Nike, Toyota, and Siemens are prioritizing sustainable innovation in their business models, setting an example for others to follow. In this Sustainability training presentation, you will learn key concepts, principles, and practices of sustainability applicable across industries. This training aims to create awareness and educate employees, senior executives, consultants, and other key stakeholders, including investors, policymakers, and supply chain partners, on the importance and implementation of sustainability.
LEARNING OBJECTIVES
1. Develop a comprehensive understanding of the fundamental principles and concepts that form the foundation of sustainability within corporate environments.
2. Explore the sustainability implementation model, focusing on effective measures and reporting strategies to track and communicate sustainability efforts.
3. Identify and define best practices and critical success factors essential for achieving sustainability goals within organizations.
CONTENTS
1. Introduction and Key Concepts of Sustainability
2. Principles and Practices of Sustainability
3. Measures and Reporting in Sustainability
4. Sustainability Implementation & Best Practices
To download the complete presentation, visit: https://www.oeconsulting.com.sg/training-presentations
Falcon stands out as a top-tier P2P Invoice Discounting platform in India, bridging esteemed blue-chip companies and eager investors. Our goal is to transform the investment landscape in India by establishing a comprehensive destination for borrowers and investors with diverse profiles and needs, all while minimizing risk. What sets Falcon apart is the elimination of intermediaries such as commercial banks and depository institutions, allowing investors to enjoy higher yields.
What is the TDS Return Filing Due Date for FY 2024-25.pdfseoforlegalpillers
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RMD24 | Debunking the non-endemic revenue myth Marvin Vacquier Droop | First ...BBPMedia1
Marvin neemt je in deze presentatie mee in de voordelen van non-endemic advertising op retail media netwerken. Hij brengt ook de uitdagingen in beeld die de markt op dit moment heeft op het gebied van retail media voor niet-leveranciers.
Retail media wordt gezien als het nieuwe advertising-medium en ook mediabureaus richten massaal retail media-afdelingen op. Merken die niet in de betreffende winkel liggen staan ook nog niet in de rij om op de retail media netwerken te adverteren. Marvin belicht de uitdagingen die er zijn om echt aansluiting te vinden op die markt van non-endemic advertising.
The world of search engine optimization (SEO) is buzzing with discussions after Google confirmed that around 2,500 leaked internal documents related to its Search feature are indeed authentic. The revelation has sparked significant concerns within the SEO community. The leaked documents were initially reported by SEO experts Rand Fishkin and Mike King, igniting widespread analysis and discourse. For More Info:- https://news.arihantwebtech.com/search-disrupted-googles-leaked-documents-rock-the-seo-world/
4. Factors Affecting the Rate of
Reaction
Total surface area of solid
reactant
Jumlah luas permukaan bahan
Concentration of reactant
Kepekatan bahan
Temperature of reactant
Suhu bahan
Use of catalyst
Penggunaan pemangkin
Pressure of gaseous reactant
Tekanan gas bahan
5. Effect of total surface area of solid reactant
on the rate of reaction
Smaller the size (increase the total surface
area), cm3, of the solid reactant, the higher
the rate of reaction, the shorter time taken
Zinc powder - Small
size, big total
surface area
Zinc granules - Big
size, small total
surface area
6. 1 big cube (big size)
Total surface area
= 100 cm2 x 6 = 600 cm2
7. 1 big cube (big size)
Total surface area = 600 cm2
1 cm
1 cm
Total surface area for 1 small cubes
= 1 cm2 x 6 = 6 cm2
There are 1000 small cubes,
so,
Total surface area for all small
cubes;
= 6 cm2 x 1000 = 6000 cm2
8. Effect of concentration of a liquid reactant on the
rate of reaction
Higher the concentration, mol dm-3, of a
liquid reactant, the higher the rate of
reaction
9. Effect of temperature on the rate of
reaction
Increase in temperature, the higher the
rate of reaction.
Effect of pressure on the rate of reaction
Increase in pressure, the higher the
rate of reaction
10. Effect of catalyst on the rate of
reaction
Alters the rate of reaction
It is specific in its action. It can only
catalyse
a particular reaction
Does not change the quantity of
products
formed
Only small amount of catalyst is
needed to
increases the rate of reaction. (An
increase in
12. The end of the graph depends on the
Volume of Gas number of mole reactants used
Time
The slope /gradient of the graph depends on the
Factors that Affect the Rate of Reaction
13. C
B
A
The factors are:
- Size
- Temperature
- Concentration
- Pressure
- Catalyst
A - 2 g of zinc powder reacts with 50 cm3 0.5 mol dm-3
of HCl
B - 2 g of zinc powder reacts with 25 cm3 1.0 mol dm-3
of HCl
C - 2 g of zinc powder reacts with 100 cm3 0.7 mol dm-3
of HCl
14. B
C
A
The factors are:
- Size
- Temperature
- Concentration
- Pressure
- Catalyst
A - 5 g of granulated zinc reacts with 100 cm3 0.5 mol dm-3
of H2SO4
B - 5 g of granulated zinc reacts with 200 cm3 0.5 mol dm-3
of H2SO4
C - 5 g of zinc powder reacts with 200 cm3 0.5 mol dm-3
of H2SO4
15. B
C
A
The factors are:
- Size
- Temperature
- Concentration
- Pressure
- Catalyst
A - 5 g of granulated zinc reacts with 25 cm3 0.5 mol dm-3
of H2SO4 when heated until 50oC
B - 5 g of granulated zinc reacts with 100 cm3 0.5 mol dm-3
of H2SO4 when heated until 50oC
C - 5 g of granulated zinc reacts with 100 cm3 0.5 mol dm-3
of H2SO4 when heated until 70oC