Chapter 15: Chemical Equilibrium
... amount of solid present as long as there is some solid present for the system to reach equilibrium. The concentration of a pure solid depends only on the density of the substance, a constant that can be incorporated into the equilibrium constant. 2. Pure liquids and solvents do not appear in equilib ...
... amount of solid present as long as there is some solid present for the system to reach equilibrium. The concentration of a pure solid depends only on the density of the substance, a constant that can be incorporated into the equilibrium constant. 2. Pure liquids and solvents do not appear in equilib ...
48th CHEMISTRY OLYMPIAD CHEMISTRY
... most important buffer system is a carbonate buffer, which is prepared by a salt (HCO3−) and acid (H2CO3) in molar ratio 20:1 (precisely). The exhaled CO2 is released out from a metacarbonic acid, which participates in equilibrium in a blood. a) For the I and II dissociation stages of metacarbonic ac ...
... most important buffer system is a carbonate buffer, which is prepared by a salt (HCO3−) and acid (H2CO3) in molar ratio 20:1 (precisely). The exhaled CO2 is released out from a metacarbonic acid, which participates in equilibrium in a blood. a) For the I and II dissociation stages of metacarbonic ac ...
5 Steps
... constantly evolving and so this guide has evolved. In this edition, we have updated the book to match the new AP Chemistry exam, especially the changes in the free-response section. In the new exam, questions about laboratory experiments will be treated differently than in previous years. We have re ...
... constantly evolving and so this guide has evolved. In this edition, we have updated the book to match the new AP Chemistry exam, especially the changes in the free-response section. In the new exam, questions about laboratory experiments will be treated differently than in previous years. We have re ...
Instructor`s Guide to General Chemistry: Guided
... element or one compound. A mixture, which is better called an inhomogeneous mixture, is matter consisting of two or more pure substances combined inhomogeneously, which means that one macroscopic region, as seen visually or with a microscope, differs from another. A solution is matter of two or more ...
... element or one compound. A mixture, which is better called an inhomogeneous mixture, is matter consisting of two or more pure substances combined inhomogeneously, which means that one macroscopic region, as seen visually or with a microscope, differs from another. A solution is matter of two or more ...
Acid-Base Equilibria
... species. Total H+ is sum of all equil H+ but usually neglect all but the principal rxn. – In the case of a triprotic acid, such as H3PO4, the third ionization constant, Ka3, is smaller than the second one, Ka2. ...
... species. Total H+ is sum of all equil H+ but usually neglect all but the principal rxn. – In the case of a triprotic acid, such as H3PO4, the third ionization constant, Ka3, is smaller than the second one, Ka2. ...
5 Steps to a 5 AP Chemistry, 2008-2009 Edition
... constantly evolving and so this guide has evolved. In this edition, we have updated the book to match the new AP Chemistry exam, especially the changes in the free-response section. In the new exam, questions about laboratory experiments will be treated differently than in previous years. We have re ...
... constantly evolving and so this guide has evolved. In this edition, we have updated the book to match the new AP Chemistry exam, especially the changes in the free-response section. In the new exam, questions about laboratory experiments will be treated differently than in previous years. We have re ...
Exam Review
... A fractional distillation tower contains trays positioned at various levels. Heated crude oil enters near the bottom of the tower. The bottom of the tower is kept hot, and the temperature gradually decreases toward the top of the tower. Where the temperature in the higher parts of the tower is below ...
... A fractional distillation tower contains trays positioned at various levels. Heated crude oil enters near the bottom of the tower. The bottom of the tower is kept hot, and the temperature gradually decreases toward the top of the tower. Where the temperature in the higher parts of the tower is below ...
Groundbreaking Measurement of Free Chlorine Disinfecting Power
... bathing water3 and ~800 mV for safe drinking water4. For the purpose of pretreatment screening to detect chlorine levels prior to contact with chlorinesensitive RO membranes, some manufacturers of RO membranes and other water quality treatment equipment will also specify an ORP tolerance value for p ...
... bathing water3 and ~800 mV for safe drinking water4. For the purpose of pretreatment screening to detect chlorine levels prior to contact with chlorinesensitive RO membranes, some manufacturers of RO membranes and other water quality treatment equipment will also specify an ORP tolerance value for p ...
Study materials of Chemistry for class XII
... With phosphorus which is pentavalent, four of its electrons are involved in bound formation with silicon and the fifth valence electron is free to conduct for conduct electricity. This type of semiconductor is called n-type semiconductor. (ii) With gallium which is trivalent, three bounds are formed ...
... With phosphorus which is pentavalent, four of its electrons are involved in bound formation with silicon and the fifth valence electron is free to conduct for conduct electricity. This type of semiconductor is called n-type semiconductor. (ii) With gallium which is trivalent, three bounds are formed ...
Chapter 4: Reactions in Aqueous Solution
... A) H2O B) CH3OH C) CH3CH2OH D) HF E) NaF Ans: E Category: Easy Section: 4.1 2. Which of the following compounds is a weak electrolyte? A) HNO3 B) NaNO3 C) HNO2 D) NaNO2 E) NaOH Ans: C Category: Easy Section: 4.1 3. Which of the following compounds is a strong electrolyte? A) H2O D) CH3CH2OH (ethanol ...
... A) H2O B) CH3OH C) CH3CH2OH D) HF E) NaF Ans: E Category: Easy Section: 4.1 2. Which of the following compounds is a weak electrolyte? A) HNO3 B) NaNO3 C) HNO2 D) NaNO2 E) NaOH Ans: C Category: Easy Section: 4.1 3. Which of the following compounds is a strong electrolyte? A) H2O D) CH3CH2OH (ethanol ...
IIT-JEE - Brilliant Public School Sitamarhi
... Q.30 A strong current of trivalent gaseous boron passed through a germanium crystal decreases the density of the crystal due to part replacement of germanium by boron and due to interstitial vacancies created by missing Ge atoms. In one such experiment, one gram of germanium is taken and the boron a ...
... Q.30 A strong current of trivalent gaseous boron passed through a germanium crystal decreases the density of the crystal due to part replacement of germanium by boron and due to interstitial vacancies created by missing Ge atoms. In one such experiment, one gram of germanium is taken and the boron a ...
Alchemist`s Cookbook Student Part 2 (final)
... drawn atoms using the Plum Pudding model. In the space below, sketch a picture of a Plum Pudding atom and explain how it is different from the pictures of atoms you have been trained to draw as a 21st century student of chemistry. ...
... drawn atoms using the Plum Pudding model. In the space below, sketch a picture of a Plum Pudding atom and explain how it is different from the pictures of atoms you have been trained to draw as a 21st century student of chemistry. ...
for the exam on 14 feb
... a. AgI in aqueous NaCN to form Ag(CN)216.108 Will a precipitate of BaSO4 form when 100 mL of 4.0 * 10-3 M BaCl2 and 300 mL of 6.0 * 10-4 M Na2SO4 are mixed? Explain. 16.109 Will a precipitate of PbCl2 form on mixing equal volumes of 0.010 M Pb(NO3)2 and 0.010 M HCl? Explain. What minimum Cl- concent ...
... a. AgI in aqueous NaCN to form Ag(CN)216.108 Will a precipitate of BaSO4 form when 100 mL of 4.0 * 10-3 M BaCl2 and 300 mL of 6.0 * 10-4 M Na2SO4 are mixed? Explain. 16.109 Will a precipitate of PbCl2 form on mixing equal volumes of 0.010 M Pb(NO3)2 and 0.010 M HCl? Explain. What minimum Cl- concent ...
File
... 36. Hydrogen reacts with some elements to form binary compounds called __________. (Halides, Hydrides, Oxides, all of these) 37. The hydrides formed by the transfer of electrons from electropositive metals to hydrogen are called __________. (Ionic hydrides, covalent hydrides, Complex hydrides, Inter ...
... 36. Hydrogen reacts with some elements to form binary compounds called __________. (Halides, Hydrides, Oxides, all of these) 37. The hydrides formed by the transfer of electrons from electropositive metals to hydrogen are called __________. (Ionic hydrides, covalent hydrides, Complex hydrides, Inter ...