AP Semestar Exam REVIEW
... e. Place 40.0 g NaOH(s) in a flask and add 500 g of water. ____ 15. Precipitation reactions occur a. when group 1 cations are mixed with group 17 anions. b. when insoluble reactants are mixed. c. when ionic compounds react to form non-ionic products. d. predominantly with halide salts. e. when solu ...
... e. Place 40.0 g NaOH(s) in a flask and add 500 g of water. ____ 15. Precipitation reactions occur a. when group 1 cations are mixed with group 17 anions. b. when insoluble reactants are mixed. c. when ionic compounds react to form non-ionic products. d. predominantly with halide salts. e. when solu ...
4 • Reactions In Aqueous Solution
... equation for the reaction of washing soda, Na2CO3 and vinegar, HC2H3O2. ...
... equation for the reaction of washing soda, Na2CO3 and vinegar, HC2H3O2. ...
Water Chemistry 3
... Carbonic acid dissociates in two steps 1) Carbonic acid donates one proton (H+) to create bicarbonate HCO3H2CO3 ⇔ H+ + HCO32) Bicarbonate donates a proton (H+) to form carbonate CO32HCO3- ⇔ H+ + CO32Reaction ...
... Carbonic acid dissociates in two steps 1) Carbonic acid donates one proton (H+) to create bicarbonate HCO3H2CO3 ⇔ H+ + HCO32) Bicarbonate donates a proton (H+) to form carbonate CO32HCO3- ⇔ H+ + CO32Reaction ...
Enthalpies of Reaction
... State Functions • State function: depends only on the initial and final states of system, not on how the internal energy is used. ...
... State Functions • State function: depends only on the initial and final states of system, not on how the internal energy is used. ...
Unit 8 Note Packet
... 3. Analyze or draw a graph for the energy change of a chemical reaction. 4. Calculate the heat of solution for a given compound. We are looking for: 1a. Given the word equation/sentence, translate it into a formula chemical equation and vice versa. 1b. Use the proper symbols in a chemical equation s ...
... 3. Analyze or draw a graph for the energy change of a chemical reaction. 4. Calculate the heat of solution for a given compound. We are looking for: 1a. Given the word equation/sentence, translate it into a formula chemical equation and vice versa. 1b. Use the proper symbols in a chemical equation s ...
General Chemistry
... • Solutes and solvent are components of the solution. • In the process of making solutions with condensed phases, intermolecular forces become rearranged. • Consider NaCl (solute) dissolving in water (solvent): – the water H-bonds have to be interrupted, – NaCl dissociates into Na+ and Cl-, – ion-di ...
... • Solutes and solvent are components of the solution. • In the process of making solutions with condensed phases, intermolecular forces become rearranged. • Consider NaCl (solute) dissolving in water (solvent): – the water H-bonds have to be interrupted, – NaCl dissociates into Na+ and Cl-, – ion-di ...
Honors Chemistry Exam Review Questions
... the nucleus of an atom is positively charged the nucleus of an atom contains mostly all the mass of the atom atoms are composed mainly of empty space electrons are contained in the nucleus of an atom ...
... the nucleus of an atom is positively charged the nucleus of an atom contains mostly all the mass of the atom atoms are composed mainly of empty space electrons are contained in the nucleus of an atom ...
Keq Assignment
... Pay close attention to the physical states! NOTES: You must include the charge when writing ions, otherwise your answer is incorrect. Do not balance these equations using fractions for coefficients. a) sulfur dioxide gas combines with oxygen gas to produce sulfur trioxide gas ...
... Pay close attention to the physical states! NOTES: You must include the charge when writing ions, otherwise your answer is incorrect. Do not balance these equations using fractions for coefficients. a) sulfur dioxide gas combines with oxygen gas to produce sulfur trioxide gas ...
1984 Advanced Placement Exam
... (A) The burette was not rinsed with NaOH (A) 42.8 grams of KIO3 and add 2.00 kilograms solution of H2O (B) The student misread a 5 for a 6 on the (B) 42.8 grams of KIO3 and add H2O until the burette when the first sample was titrated. final homogeneous solution has a volume of (C) A different amount ...
... (A) The burette was not rinsed with NaOH (A) 42.8 grams of KIO3 and add 2.00 kilograms solution of H2O (B) The student misread a 5 for a 6 on the (B) 42.8 grams of KIO3 and add H2O until the burette when the first sample was titrated. final homogeneous solution has a volume of (C) A different amount ...
Chemistry Chapter 9.1 Making Predictions About Solubility
... These deposits form a coating on heating elements in kettles and boilers and build up inside hot water pipes; commonly called boiler scale; reduces flow of water in pipes; increases cost of heating water Simple way of removing boiler scale from inside a kettle or coffee maker is to add vinegar; acet ...
... These deposits form a coating on heating elements in kettles and boilers and build up inside hot water pipes; commonly called boiler scale; reduces flow of water in pipes; increases cost of heating water Simple way of removing boiler scale from inside a kettle or coffee maker is to add vinegar; acet ...
Atomic Theory (2
... 2.) Convert the following to particles (atoms, compounds, molecules, etc): a. 3.5 moles of Aluminum Phosphide b. 7.9 moles of diphosphorus pentoxide c. 1.5 moles of Carbon tetrachloride d. 5 L of Chlorine e. 15 L of Hydrogen gas f. 32 g of O2 g. 62 g of P h. 132 g of CO2 3.) Convert the following to ...
... 2.) Convert the following to particles (atoms, compounds, molecules, etc): a. 3.5 moles of Aluminum Phosphide b. 7.9 moles of diphosphorus pentoxide c. 1.5 moles of Carbon tetrachloride d. 5 L of Chlorine e. 15 L of Hydrogen gas f. 32 g of O2 g. 62 g of P h. 132 g of CO2 3.) Convert the following to ...
Why Study Chemistry
... The Chemical Identity of Water ( H2O ) is changed into the elements Hydrogen ( H2 ) and Oxygen ( O2 ) ...
... The Chemical Identity of Water ( H2O ) is changed into the elements Hydrogen ( H2 ) and Oxygen ( O2 ) ...
Spring 2001 Key
... e. This is an example of a reaction where the energy of chemical bonds is converted to heat. -----------------------------------------------------------------------------------------------------------(d) is a false statement: production of 6 moles of CO2 will produce 4440 kJ of heat. The reaction is ...
... e. This is an example of a reaction where the energy of chemical bonds is converted to heat. -----------------------------------------------------------------------------------------------------------(d) is a false statement: production of 6 moles of CO2 will produce 4440 kJ of heat. The reaction is ...
Worksheet answers
... theoretical yield = the amount of product that can be made from the limiting reactant actual yield = the amount of product that is made in a reaction; actual yield generally less than the theoretical yield, never more! percent yield = the efficiency of product recovery ...
... theoretical yield = the amount of product that can be made from the limiting reactant actual yield = the amount of product that is made in a reaction; actual yield generally less than the theoretical yield, never more! percent yield = the efficiency of product recovery ...
electrochemistry - einstein classes
... C4A Electrolysis : Electrolysis is a process which involves a chemical change at the electrodes when electricity is passes through an electrolyte. “Electrolysis is a process which involves a chemical change at the electrodes when electricity is passed through an electrolyte”. It was found experiment ...
... C4A Electrolysis : Electrolysis is a process which involves a chemical change at the electrodes when electricity is passes through an electrolyte. “Electrolysis is a process which involves a chemical change at the electrodes when electricity is passed through an electrolyte”. It was found experiment ...
Molecular Structure and Chemical Properties of Atmospheric Water
... Earth’s atmosphere, since water vapor is recognized among the principal absorbers of radiation in the atmosphere. Atmospheric chemistry and photochemistry are also strongly affected by the presence of water. The water molecule gives rise to a good deal of members of the atmospheric water family, whi ...
... Earth’s atmosphere, since water vapor is recognized among the principal absorbers of radiation in the atmosphere. Atmospheric chemistry and photochemistry are also strongly affected by the presence of water. The water molecule gives rise to a good deal of members of the atmospheric water family, whi ...
Practice problems for chapter 1, 3 and 5 1) A small amount of salt
... 11) How many molecules of CH4 are in 48.2 g of this compound? 12) A 30.5 gram sample of glucose (C6H12O6) contains __________ mol of glucose. 13) A sample of CH2F2 with a mass of 19 g contains __________ atoms of F. 14) A sample of CH4O with a mass of 32.0 g contains __________ molecules of CH4O. 15 ...
... 11) How many molecules of CH4 are in 48.2 g of this compound? 12) A 30.5 gram sample of glucose (C6H12O6) contains __________ mol of glucose. 13) A sample of CH2F2 with a mass of 19 g contains __________ atoms of F. 14) A sample of CH4O with a mass of 32.0 g contains __________ molecules of CH4O. 15 ...
Chp 5
... • pH indicators change colour based on the solution they are placed in. • Litmus is the most common indicator, and is used on litmus paper. • Two colours of litmus paper: Blue = basic and Red = acidic. • Blue = pH above 7, Red = pH below 7. ...
... • pH indicators change colour based on the solution they are placed in. • Litmus is the most common indicator, and is used on litmus paper. • Two colours of litmus paper: Blue = basic and Red = acidic. • Blue = pH above 7, Red = pH below 7. ...
Introductory Chemistry Test Review
... 28. Hydrogen peroxide can decompose to water and oxygen by the following reaction: 2 H2O2(l) → 2 H2O(l) + O2(g) ΔH = –196 kJ/mol Calculate the value of q when 5.00 g of H2O2(l) decomposes at constant pressure. ...
... 28. Hydrogen peroxide can decompose to water and oxygen by the following reaction: 2 H2O2(l) → 2 H2O(l) + O2(g) ΔH = –196 kJ/mol Calculate the value of q when 5.00 g of H2O2(l) decomposes at constant pressure. ...
2002 AP Chemistry Free-Response Questions
... 5. A student is asked to determine the molar enthalpy of neutralization, DHneut , for the reaction represented above. The student combines equal volumes of 1.0 M HCl and 1.0 M NaOH in an open polystyrene cup calorimeter. The heat released by the reaction is determined by using the equation q = mcDT ...
... 5. A student is asked to determine the molar enthalpy of neutralization, DHneut , for the reaction represented above. The student combines equal volumes of 1.0 M HCl and 1.0 M NaOH in an open polystyrene cup calorimeter. The heat released by the reaction is determined by using the equation q = mcDT ...
apchem - practice midterm_shs
... guessing will improve your score significantly; it may even lower your score, and it does take time. If, however, you are not sure of the correct answer but have some knowledge of the question and are able to eliminate one or more of the answer choices as wrong, your chance of getting the right answ ...
... guessing will improve your score significantly; it may even lower your score, and it does take time. If, however, you are not sure of the correct answer but have some knowledge of the question and are able to eliminate one or more of the answer choices as wrong, your chance of getting the right answ ...
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.