Chapter 4 - Chemistry
... Strategy: In order to break a redox reaction down into an oxidation half-reaction and a reduction halfreaction, you should first assign oxidation numbers to all the atoms in the reaction. In this way, you can determine which element is oxidized (loses electrons) and which element is reduced (gains e ...
... Strategy: In order to break a redox reaction down into an oxidation half-reaction and a reduction halfreaction, you should first assign oxidation numbers to all the atoms in the reaction. In this way, you can determine which element is oxidized (loses electrons) and which element is reduced (gains e ...
COMPETITION PTOBLEMS 1
... This publication contains the competition problems from the first twenty International Chemistry Olympiads (ICHO) organized in the years 1968 – 1988. It has been published by the ICHO International Information Centre in Bratislava (Slovakia) on the occasion of the 40th anniversary of this internatio ...
... This publication contains the competition problems from the first twenty International Chemistry Olympiads (ICHO) organized in the years 1968 – 1988. It has been published by the ICHO International Information Centre in Bratislava (Slovakia) on the occasion of the 40th anniversary of this internatio ...
chapter 5 gases
... Strategy: In order to break a redox reaction down into an oxidation half-reaction and a reduction halfreaction, you should first assign oxidation numbers to all the atoms in the reaction. In this way, you can determine which element is oxidized (loses electrons) and which element is reduced (gains e ...
... Strategy: In order to break a redox reaction down into an oxidation half-reaction and a reduction halfreaction, you should first assign oxidation numbers to all the atoms in the reaction. In this way, you can determine which element is oxidized (loses electrons) and which element is reduced (gains e ...
questions based on high order thinking skill - Entrance
... or ions leacve the lattice site completely some lattice sites are vacant. As a result of this defect the density of the substance decreases, because some atoms leave the structure completely. Q. 9. (a) (b) ...
... or ions leacve the lattice site completely some lattice sites are vacant. As a result of this defect the density of the substance decreases, because some atoms leave the structure completely. Q. 9. (a) (b) ...
Lab Manual (Eng. Medium)
... chosen according to the need of accuracy of the experiment. Except syringe, measuring vessels are directly calibrated in cubic centimeter c.c. (or milliliters i.e. mL). These measuring vessels sometime may be wrongly graduated. Therefore, it is desirable to check the measuring vessel before using it ...
... chosen according to the need of accuracy of the experiment. Except syringe, measuring vessels are directly calibrated in cubic centimeter c.c. (or milliliters i.e. mL). These measuring vessels sometime may be wrongly graduated. Therefore, it is desirable to check the measuring vessel before using it ...
Basic chemistry help is available here for high school or college
... classroom students. All hard copy materials distributed under this exception must have on every page distributed reference to http://www.chemtutor.com as source. Under the same exception granted to classroom teachers, full recognition of Chemtutor must be given when all or any part is included in an ...
... classroom students. All hard copy materials distributed under this exception must have on every page distributed reference to http://www.chemtutor.com as source. Under the same exception granted to classroom teachers, full recognition of Chemtutor must be given when all or any part is included in an ...
Problem 1-2
... State the behavior of the bubbles when rising and explain your observations. Account for the difference of V1 and V2. Write down the equations of the equilibria which exist between water and carbon dioxide and indicate which of them is the most important with respect to the solubility of carbon diox ...
... State the behavior of the bubbles when rising and explain your observations. Account for the difference of V1 and V2. Write down the equations of the equilibria which exist between water and carbon dioxide and indicate which of them is the most important with respect to the solubility of carbon diox ...
enjoy chemistry
... (xxiv) ClF3 exists but FCl3 does not. Ans:Due to unavailability of d-orbitals in fluorine atom it cannot expand its valence shell. Therefore it is unable to form FCl3 whereas Chlorine has vacant d-orbitals. Hence it can promote one of the 3 p electrons to the 3-d sub shell and shows +3 oxidation sta ...
... (xxiv) ClF3 exists but FCl3 does not. Ans:Due to unavailability of d-orbitals in fluorine atom it cannot expand its valence shell. Therefore it is unable to form FCl3 whereas Chlorine has vacant d-orbitals. Hence it can promote one of the 3 p electrons to the 3-d sub shell and shows +3 oxidation sta ...
Acid rain
Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions (low pH). It can have harmful effects on plants, aquatic animals and infrastructure. Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids. Governments have made efforts since the 1970s to reduce the release of sulfur dioxide into the atmosphere with positive results. Nitrogen oxides can also be produced naturally by lightning strikes and sulfur dioxide is produced by volcanic eruptions. The chemicals in acid rain can cause paint to peel, corrosion of steel structures such as bridges, and erosion of stone statues.