Bond enthalpies - Study guides, Class notes & Summaries
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MCAT Practice Exam Questions And Answers 2022/2023
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Thin layer chromatography can use silica plates which are very polar. Will polar or non polar substances have lower Rf values on this plate? - Answer - Polar substances - they will have a higher affinity for the silica and thus will not travel as far as the non polar substances 
 
A titration of a strong acid with a strong base or vice versa has an equivalence point around what pH? - Answer - 7 
 
What type of bond is usually disrupted during denaturation of proteins? - Answer - H bond 
 
Is ura...
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Principles of Chemical Science_Thermodynamics Bond and Reaction Enthalpies - Lec15
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Lecture 15: Thermodynamics: Bond and Reaction Enthalpies 
1.	Thermodynamics 
1.	Bond Energy / Bond Enthalpy (∆HB) 
2.	Enthalpies of Reaction (∆Hr) 
3.	Methods to Calculate ∆Hr
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As level Chem A Sample question paper H032/02 depth
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As level Chem A Sample question 
paper H032/02 depth 
A student carries out an experiment to identify an unknown carbonate. 
the sample of carbonate is dissolved in apox. 100cm3 of distilled water in a beaker and 
the solution is transferred to a volumetric flask. the volume of solution is made up to 
250cm3 with distilled water. 
suggested were the possible errors 
- A small amount of solid remained in weighing bottle 
- A small amount of solution remained in the beaker 
is the students st...
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As level Chem A Sample question paper H032/02 depth
- Exam (elaborations) • 3 pages • 2024
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As level Chem A Sample question 
paper H032/02 depth 
A student carries out an experiment to identify an unknown carbonate. 
the sample of carbonate is dissolved in apox. 100cm3 of distilled water in a beaker and 
the solution is transferred to a volumetric flask. the volume of solution is made up to 
250cm3 with distilled water. 
suggested were the possible errors 
- A small amount of solid remained in weighing bottle 
- A small amount of solution remained in the beaker 
is the students st...
-
AS Level Chemistry A H032/02 Depth in chemistry Sample Question Paper
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Bromine is a reactive element. It combines with other non-metals to form covalent compounds. 
Phosphorus tribromide, PBr3, and iodine monobromide, IBr, are examples of covalent compounds used in 
organic synthesis. 
(a) PBr3 can be prepared by heating bromine with phosphorus, P4. 
(i) Write an equation for this reaction. 
…………………………………………………………………………………………. [1] 
(ii) How many molecules are present in 1.3535 g of PBr3? 
number of...
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Exam (elaborations) TEST BANK FOR Physical Chemistry By Atkins 8th Edition
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Exam (elaborations) TEST BANK FOR Physical Chemistry By Atkins 8th Edition (Instructor Solution Manual to ISBN 7594) Physical Chemistry, ISBN: 4334 
 (Instructor Solution Manual to ISBN 7594) 
Part 1: Equilibrium 
1 The properties of gases 
Solutions to exercises 
Discussion questions 
E1.1(b) The partial pressure of a gas in a mixture of gases is the pressure the gas would exert if it occupied 
alone the same container as the mixture at the same temperature. It is a limiting law because it h...
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MCAT Practice Exam Questions 2022
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Thin layer chromatography can use silica plates which are very polar. Will polar or non polar substances have lower Rf values on this plate? - ANSWER Polar substances - they will have a higher affinity for the silica and thus will not travel as far as the non polar substances 
 
A titration of a strong acid with a strong base or vice versa has an equivalence point around what pH? - ANSWER 7 
 
What type of bond is usually disrupted during denaturation of proteins? - ANSWER H bond 
 
Is uracil a ...
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AQA A-Level Chemistry 1.5 Kinetics
- Summary • 1 pages • 2022
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These are detailed Revision Notes for Topic 1.5 of AQA A-Level Chemistry (Kinetics). They were written by me using a combination of the textbook and class notes. I will also be uploading the other topics and creating bundles. 
Topics Included: 
- Exothermic and endothermic reactions 
- Enthalpy 
- Measuring enthalpy changes 
- Hess’s Law 
- Enthalpy change of combustion 
- Representing thermochemical cycles 
- Bond enthalpies
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AS Level Chemistry A
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1	Bromine is a reactive element. It combines with other non-metals to form covalent compounds. Phosphorus tribromide, PBr3, and iodine monobromide, IBr, are examples of covalent compounds used in organic synthesis. 
 
(a)	PBr3 can be prepared by heating bromine with phosphorus, P4. 
 
(i)	Write an equation for this reaction. 
 
………………………………………………………………………………………….	[1] 
 
(ii)	How many molecules are present in 1.3535 g of PBr3? 
 ...
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Enthalpy
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Bond enthalpy, enthalpy changes etc. Following the spec, just has the key points you need to know for the exam. Helped me to achieve an A* in my exam and I hope it can do the same for you!!! - Best way to use these is to read them and then do a question booklet on the topic straight after - if you need any help Im not sure if there is a way to contact me through this but Im glad to help! 
 
topics include: 
1. enthalpy changes 
2. measuring enthalpy changes 
 enthalpies 
4. hess' law and ent...
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