12_chemistry_impq_CH13_amines_02
... Hoffmann developed a method for preparation of primary amines by treating an amide with bromine in an aqueous or ethanolic solution of sodium hydroxide. The amine so formed contains one carbon less than that present in the amide. ...
... Hoffmann developed a method for preparation of primary amines by treating an amide with bromine in an aqueous or ethanolic solution of sodium hydroxide. The amine so formed contains one carbon less than that present in the amide. ...
Topic 7.2 Equilibrium The Position of Equilibrium
... production of fertilizers, nitric acid, explosives and polymers (nylon). Under what conditions can will an industrial chemist run this reaction to increase the yield of ammonia? An optimum temperature must be found ...
... production of fertilizers, nitric acid, explosives and polymers (nylon). Under what conditions can will an industrial chemist run this reaction to increase the yield of ammonia? An optimum temperature must be found ...
006 Thermochemistry
... 56. The enthalpy change when a strong acid is neutralized by strong base is -56.1 kJ/mol. If 12.0 mL of 6.00 M HBr at 21.30C is mixed with 300. mL of 0.250 M NaOH, also at 21.30C, what will the maximum temperature reached by the resulting solution? [Assume that there is no heat loss to the contain ...
... 56. The enthalpy change when a strong acid is neutralized by strong base is -56.1 kJ/mol. If 12.0 mL of 6.00 M HBr at 21.30C is mixed with 300. mL of 0.250 M NaOH, also at 21.30C, what will the maximum temperature reached by the resulting solution? [Assume that there is no heat loss to the contain ...
Chapter 8: Balances on Nonreactive Processes
... *The flow rates were obtained by multiplying the molar fraction of each component by the total flow rate of the corresponding stream. *The enthalpy of the liquid water exiting the system was set to zero since it is leaving the system at the reference conditions. This also occurs for the nitrogen and ...
... *The flow rates were obtained by multiplying the molar fraction of each component by the total flow rate of the corresponding stream. *The enthalpy of the liquid water exiting the system was set to zero since it is leaving the system at the reference conditions. This also occurs for the nitrogen and ...
What is a solution
... The other concentration units are less frequently used:Ideal Solution: A solution of two or more constituents is said to be ideal if it obeys Raoult’s law under all conditions of temperature and concentration. We are considering a solution composed of a volatile solvent and one or more involatile so ...
... The other concentration units are less frequently used:Ideal Solution: A solution of two or more constituents is said to be ideal if it obeys Raoult’s law under all conditions of temperature and concentration. We are considering a solution composed of a volatile solvent and one or more involatile so ...
Educator`s Reference Guide for Electrochemistry
... in quasi-equilibrium with the electrode surface and are sometimes called “Nernstian” or reversible systems for this reason. The potential of the working electrode determines what, if any, redox processes occur at the surface of the electrode. Extremely positive potentials are likely to oxidize analy ...
... in quasi-equilibrium with the electrode surface and are sometimes called “Nernstian” or reversible systems for this reason. The potential of the working electrode determines what, if any, redox processes occur at the surface of the electrode. Extremely positive potentials are likely to oxidize analy ...
105 ACID - DW Brooks
... been thought of as opposites of acids, Arrhenius also proposed that bases involve hydroxide ions (OH-). The positive hydrogen ion, which is a proton, and the negative hydroxide ion together constitute water. A more useful definition ofacids and bases was proposed by Br~lnsted and Lowry in 1923. This ...
... been thought of as opposites of acids, Arrhenius also proposed that bases involve hydroxide ions (OH-). The positive hydrogen ion, which is a proton, and the negative hydroxide ion together constitute water. A more useful definition ofacids and bases was proposed by Br~lnsted and Lowry in 1923. This ...
2nd Semester Practice Chemistry Final 2009
... 14. An ideal gas is an imaginary gas a. not made of particles. b. that conforms to all of the assumptions of the kinetic theory. c. whose particles have zero mass. d. made of motionless particles. 15. An NaOH solution contains 1.90 mol of NaOH, and its concentration is 0.555 M. What is its volume? ...
... 14. An ideal gas is an imaginary gas a. not made of particles. b. that conforms to all of the assumptions of the kinetic theory. c. whose particles have zero mass. d. made of motionless particles. 15. An NaOH solution contains 1.90 mol of NaOH, and its concentration is 0.555 M. What is its volume? ...
Chemical Equilibrium - Chemistry with Mrs. Caruso Let the Bonding
... Ex. Suppose there is an equilibrium position described by the concentrations: N2+ 3H2 ⇌ 2NH3 [N2]= .399M; [H2]= 1.197M; [NH3]= .202M What will happen if 1.000 M of N2 is added to the system at constant volume? Will shift to the right. 2. Change in Pressure or Volume: Only for Gases!!!! If _____incre ...
... Ex. Suppose there is an equilibrium position described by the concentrations: N2+ 3H2 ⇌ 2NH3 [N2]= .399M; [H2]= 1.197M; [NH3]= .202M What will happen if 1.000 M of N2 is added to the system at constant volume? Will shift to the right. 2. Change in Pressure or Volume: Only for Gases!!!! If _____incre ...
the pdf of this lesson!
... The word calcium comes from the Latin word “calx”, which meant lime, as in limestone which is made of calcium carbonate. Hardwater has large amounts of calcium. It is a problem because it can form scale (calcium carbonate) in pipes. It also prevents soap from lathering or forming lots of bubbles. Wh ...
... The word calcium comes from the Latin word “calx”, which meant lime, as in limestone which is made of calcium carbonate. Hardwater has large amounts of calcium. It is a problem because it can form scale (calcium carbonate) in pipes. It also prevents soap from lathering or forming lots of bubbles. Wh ...
Topic 8 Acids and Bases File
... on the insight you gained from examining the model, explain why the term is used to describe water. ...
... on the insight you gained from examining the model, explain why the term is used to describe water. ...
Naming Compounds - Kowenscience.com
... • take the first part of the element name (the root) and add –ide to get the name oxide. • Since chromium can have more than one charge, a Roman numeral must be used to identify that charge. • There are two oxygen ions each with a 2– charge, giving an overall charge of –4. • Therefore, the charge on ...
... • take the first part of the element name (the root) and add –ide to get the name oxide. • Since chromium can have more than one charge, a Roman numeral must be used to identify that charge. • There are two oxygen ions each with a 2– charge, giving an overall charge of –4. • Therefore, the charge on ...
quantitative_chemistry
... to a glass of tea, how many moles did you add? To answer this question, we must first determine the formula mass of sucrose, which tells us the mass of 1 mol and so gives us the mass-to-moles conversion factor that we need. Here is the calculation: ...
... to a glass of tea, how many moles did you add? To answer this question, we must first determine the formula mass of sucrose, which tells us the mass of 1 mol and so gives us the mass-to-moles conversion factor that we need. Here is the calculation: ...
HOTS Worksheet
... Ans. The (— CO — NH —) amide bond in nylon gets hydrolysed. Q. 2. Fibres are of crystalline structure. Why ? Ans. Fibres have strong intermolecular forces of attraction which leads to close packing of their chains and impart crystalline structure. Q. 3. Which artificial polymer is present in bubble ...
... Ans. The (— CO — NH —) amide bond in nylon gets hydrolysed. Q. 2. Fibres are of crystalline structure. Why ? Ans. Fibres have strong intermolecular forces of attraction which leads to close packing of their chains and impart crystalline structure. Q. 3. Which artificial polymer is present in bubble ...
Acids, Bases and Salts
... According to chemistry, the term "salt" is used for ionic compounds that is composed of positively charged cations (usually metal or ammonium ions) and the negatively charged anions, so that the product remains neutral and without a net charge. The anions may be inorganic (Cl-) as well as organic (C ...
... According to chemistry, the term "salt" is used for ionic compounds that is composed of positively charged cations (usually metal or ammonium ions) and the negatively charged anions, so that the product remains neutral and without a net charge. The anions may be inorganic (Cl-) as well as organic (C ...
Question Bank for Pre Board Exam(XII Chemistry)
... 2. Why urea has a sharp melting point but glass does not have? 3. A NaCl crystal is found to have Cs Cl structure. Guess how it might have happened? 4. Why is Frenkel defect not found in pure alkali metal halides? 5. NaCl and Cs Cl have similar formula. Then why they have different structures? 6. No ...
... 2. Why urea has a sharp melting point but glass does not have? 3. A NaCl crystal is found to have Cs Cl structure. Guess how it might have happened? 4. Why is Frenkel defect not found in pure alkali metal halides? 5. NaCl and Cs Cl have similar formula. Then why they have different structures? 6. No ...
Chemical Equilibrium
... A simple example Hydrogen and oxygen gas will react to form steam (gaseous water). Hydrogen and oxygen gases were mixed in a 2 L flask at 450 C. After equilibrium was established, it was determined that there were 3 moles of water, 1.2 moles of hydrogen and 0.8 moles of oxygen in the flask. What is ...
... A simple example Hydrogen and oxygen gas will react to form steam (gaseous water). Hydrogen and oxygen gases were mixed in a 2 L flask at 450 C. After equilibrium was established, it was determined that there were 3 moles of water, 1.2 moles of hydrogen and 0.8 moles of oxygen in the flask. What is ...
chemistry - Ethiopian Ministry of Education
... All the disciplines of science share information and methods with each other. For example, biology uses the findings of both physics and chemistry to study living organisms. Chemistry utilizes the information gathered by physics about the nature of matter and energy to study the properties and inter ...
... All the disciplines of science share information and methods with each other. For example, biology uses the findings of both physics and chemistry to study living organisms. Chemistry utilizes the information gathered by physics about the nature of matter and energy to study the properties and inter ...
Chapter 12
... Therefore, the mass of the reactants equals the mass of the products. Stoichiometry and the balanced chemical equation Look at the reaction of powdered iron with oxygen shown in Figure 12-1. As tiny particles of iron react with oxygen in the air, iron(III) oxide (Fe2O3) is produced. 4Fe(s) 3O2(g) ...
... Therefore, the mass of the reactants equals the mass of the products. Stoichiometry and the balanced chemical equation Look at the reaction of powdered iron with oxygen shown in Figure 12-1. As tiny particles of iron react with oxygen in the air, iron(III) oxide (Fe2O3) is produced. 4Fe(s) 3O2(g) ...
printable version
... When NH3 gas is introduced at one end of a long tube, while HCl gas is introduced simultaneously at the other end, a ring of white ammonium chloride is observed to form in the tube after a few minutes. This ring is closer to the HCl end of the tube than the NH3 end. The molecules of gas are in const ...
... When NH3 gas is introduced at one end of a long tube, while HCl gas is introduced simultaneously at the other end, a ring of white ammonium chloride is observed to form in the tube after a few minutes. This ring is closer to the HCl end of the tube than the NH3 end. The molecules of gas are in const ...
Electrolysis of water
Electrolysis of water is the decomposition of water (H2O) into oxygen (O2) and hydrogen gas (H2) due to an electric current being passed through the water.This technique can be used to make hydrogen fuel (hydrogen gas) and breathable oxygen; though currently most industrial methods make hydrogen fuel from natural gas instead.