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Question paper - Edexcel
... Answer ALL the questions in this section. You should aim to spend no more than 20 minutes on this section. For each question, select one answer from A to D and put a cross in the box . and then mark your new answer with a If you change your mind, put a line through the box cross . 1 In which of the ...
... Answer ALL the questions in this section. You should aim to spend no more than 20 minutes on this section. For each question, select one answer from A to D and put a cross in the box . and then mark your new answer with a If you change your mind, put a line through the box cross . 1 In which of the ...
Chapter 4
... Nonelectrolytes- Do not conduct an electric current – Most are molecular materials, because they do not have ions ...
... Nonelectrolytes- Do not conduct an electric current – Most are molecular materials, because they do not have ions ...
CHEMICAL REACTIONS
... 3. reactions with acids : a. carbonates or bicarbonates and acids form a salt, water and CO2 • e.g. 2HCl + Na2CO3 Æ 2 NaCl + H2O + CO2 (net : H+ + CO32- Æ H2O + CO2) b. sulfites and acids form a salt, water and SO2 • e.g. 2 HCl + Na2SO3 Æ 2 NaCl + H2O + SO2 (net : H+ + SO32- Æ H2O + SO2) c. metallic ...
... 3. reactions with acids : a. carbonates or bicarbonates and acids form a salt, water and CO2 • e.g. 2HCl + Na2CO3 Æ 2 NaCl + H2O + CO2 (net : H+ + CO32- Æ H2O + CO2) b. sulfites and acids form a salt, water and SO2 • e.g. 2 HCl + Na2SO3 Æ 2 NaCl + H2O + SO2 (net : H+ + SO32- Æ H2O + SO2) c. metallic ...
Document
... • Acid: Substance that produces H+ HCl(aq) H+(aq) + Cl–(aq) – Some acids—called polyprotic acids • These acids contain more than one ionizable proton and release them sequentially. • For example, sulfuric acid, H2SO4 is a diprotic acid. • It is strong in its first ionizable proton, but weak in its s ...
... • Acid: Substance that produces H+ HCl(aq) H+(aq) + Cl–(aq) – Some acids—called polyprotic acids • These acids contain more than one ionizable proton and release them sequentially. • For example, sulfuric acid, H2SO4 is a diprotic acid. • It is strong in its first ionizable proton, but weak in its s ...
2011 Exam 2 Key
... So, theoretical yield is 8.8 g of CO2 b) (2 pts) The limiting reagent is __Oxygen (O2)___. Explain. 10.0 g of Oxygen is able to produce only 8.8 g of CO2, although we have C8H18 enough to produce 30.9 g of CO2. The amount of oxygen is NOT enough to consume all of octane. It will run out first. c) (4 ...
... So, theoretical yield is 8.8 g of CO2 b) (2 pts) The limiting reagent is __Oxygen (O2)___. Explain. 10.0 g of Oxygen is able to produce only 8.8 g of CO2, although we have C8H18 enough to produce 30.9 g of CO2. The amount of oxygen is NOT enough to consume all of octane. It will run out first. c) (4 ...
Water: The Universal Solvent
... CaC2O4. The CaC2O4 was dissolved in sulfuric acid and the resulting H2C2O4 was titrated with a standard KMnO4 solution. (a) Write the balanced equation for the titration reaction, shown unbalanced ...
... CaC2O4. The CaC2O4 was dissolved in sulfuric acid and the resulting H2C2O4 was titrated with a standard KMnO4 solution. (a) Write the balanced equation for the titration reaction, shown unbalanced ...
AP - 04 - Reactions in Aqueous Solutions
... depends on the compound in which it occurs. The oxidation numbers of sulfur, as seen in these examples, range from −2 to +6. ...
... depends on the compound in which it occurs. The oxidation numbers of sulfur, as seen in these examples, range from −2 to +6. ...
GENERAL CHEMISTRY REVIEW
... a) Compute the equilibrium ratio of HOCl to OCl- and the percent of the total ‘active chlorine’ present as HOCl at pH 8.0. b) At a particular instant, the activities (concentrations) of H3O+, HOCl and OCl- in solution are 10-7, 10-3 and 10-4, respectively. Determine whether the reaction above is at ...
... a) Compute the equilibrium ratio of HOCl to OCl- and the percent of the total ‘active chlorine’ present as HOCl at pH 8.0. b) At a particular instant, the activities (concentrations) of H3O+, HOCl and OCl- in solution are 10-7, 10-3 and 10-4, respectively. Determine whether the reaction above is at ...
Get Solutions - Iqraa group of institutes
... (i) Nitration is carried out in presence of concentrated HNO3 + concentrated H2SO4. (ii) Aniline acts as base. In presence of H2SO4 its protonation takes place and anilinium ion is formed ...
... (i) Nitration is carried out in presence of concentrated HNO3 + concentrated H2SO4. (ii) Aniline acts as base. In presence of H2SO4 its protonation takes place and anilinium ion is formed ...
MULTIPLE CHOICE
... 3) A weak electrolyte exists predominantly as __________ in solution. A) atoms B) ions C) molecules D) electrons ...
... 3) A weak electrolyte exists predominantly as __________ in solution. A) atoms B) ions C) molecules D) electrons ...
chlorobenzene/acetic acid 2:1 v/v msds
... The OES for acetic acid has been withdrawn by the HSE. The quoted value is for guidance only. ENGINEERING MEASURES Work in fume cupboard. Explosion-proof general and local exhaust ventilation. RESPIRATORY EQUIPMENT In case of inadequate ventilation use suitable respirator. HAND PROTECTION Use protec ...
... The OES for acetic acid has been withdrawn by the HSE. The quoted value is for guidance only. ENGINEERING MEASURES Work in fume cupboard. Explosion-proof general and local exhaust ventilation. RESPIRATORY EQUIPMENT In case of inadequate ventilation use suitable respirator. HAND PROTECTION Use protec ...
111 Exam IV outline
... III. Lewis Acid-Base Concept A. DEFINITION Lewis Acid ⇨ A substance that is an electron pair acceptor (A covalent bond is made) ex. ...
... III. Lewis Acid-Base Concept A. DEFINITION Lewis Acid ⇨ A substance that is an electron pair acceptor (A covalent bond is made) ex. ...
The Representative Elements: Group 5A Through 8A
... Elements of Group 5A overwhelmingly form covalent compounds. Whereas nitrogen can form a maximum of four covalent bonds, other elements in the group can form more than four covalent bonds by utilizing one or more of the nd orbitals. Nitrogen and phosphorus form simple anion with “-3” charge when rea ...
... Elements of Group 5A overwhelmingly form covalent compounds. Whereas nitrogen can form a maximum of four covalent bonds, other elements in the group can form more than four covalent bonds by utilizing one or more of the nd orbitals. Nitrogen and phosphorus form simple anion with “-3” charge when rea ...
Chapter 20 – The Representative Elements
... Elements of Group 5A overwhelmingly form covalent compounds. Whereas nitrogen can form a maximum of four covalent bonds, other elements in the group can form more than four covalent bonds by utilizing one or more of the nd orbitals. Nitrogen and phosphorus form simple anion with “-3” charge when rea ...
... Elements of Group 5A overwhelmingly form covalent compounds. Whereas nitrogen can form a maximum of four covalent bonds, other elements in the group can form more than four covalent bonds by utilizing one or more of the nd orbitals. Nitrogen and phosphorus form simple anion with “-3” charge when rea ...
Chapter 4 Notes
... 2. Write the ionic equation showing the strong electrolytes completely dissociated into cations and anions. 3. Cancel the spectator ions on both sides of the ionic equation 4. Check that charges and number of atoms are balanced in the net ionic equation ...
... 2. Write the ionic equation showing the strong electrolytes completely dissociated into cations and anions. 3. Cancel the spectator ions on both sides of the ionic equation 4. Check that charges and number of atoms are balanced in the net ionic equation ...
AP Chem Equations - Speedway High School
... points. One point is given for the correct reactants and two points for all correct products. If a reaction has three products, one point is given for two correct products and two points for all correct products. Leaving in the spectator ions will result in one point deduction on the equation set (n ...
... points. One point is given for the correct reactants and two points for all correct products. If a reaction has three products, one point is given for two correct products and two points for all correct products. Leaving in the spectator ions will result in one point deduction on the equation set (n ...
WRITING AP EQUATIONS AP equation sets are found in the free
... points. One point is given for the correct reactants and two points for all correct products. If a reaction has three products, one point is given for two correct products and two points for all correct products. Leaving in the spectator ions will result in one point deduction on the equation set (n ...
... points. One point is given for the correct reactants and two points for all correct products. If a reaction has three products, one point is given for two correct products and two points for all correct products. Leaving in the spectator ions will result in one point deduction on the equation set (n ...
Carboxylic Acids - BSAK Chemistry weebly
... Q: What test would you use for the carboxylic acid functional group? A: Add PCl5 - misty white fumes of HCl are produced and this confirms the presence of the OH group. ...
... Q: What test would you use for the carboxylic acid functional group? A: Add PCl5 - misty white fumes of HCl are produced and this confirms the presence of the OH group. ...
Predicting Reactions • AP Chemistry CLASSIFYING REACTIONS
... the opposite of the reaction at the top of this 2. When you see a gaseous compound bubble through any solution, change the gas into the Lewis acid or base they become: CO2(g) + H2O H2CO3 NH3(g) + H2O NH4OH SO2(g) + H2O H2SO3 Some reactions involve industrial processes such as the formation of lime ( ...
... the opposite of the reaction at the top of this 2. When you see a gaseous compound bubble through any solution, change the gas into the Lewis acid or base they become: CO2(g) + H2O H2CO3 NH3(g) + H2O NH4OH SO2(g) + H2O H2SO3 Some reactions involve industrial processes such as the formation of lime ( ...
1C - Edexcel
... in the boxes at the top of this page with your name, t Fill centre number and candidate number. all questions. t Answer the questions in the spaces provided t Answer – there may be more space than you need. all the steps in any calculations and state the units. t Show ...
... in the boxes at the top of this page with your name, t Fill centre number and candidate number. all questions. t Answer the questions in the spaces provided t Answer – there may be more space than you need. all the steps in any calculations and state the units. t Show ...
dutch national chemistry olympiad
... Acetylsalicylic acid is not the only acid present in effervescent tablets. Apart from acetylsalicylic acid, Aspro-Clear tablets contain also citric acid (C6H8O7, molecular mass 192.1 u), which reacts with hydrogen carbonate producing carbon dioxide. Acetylsalicylic acid is a monovalent acid and citr ...
... Acetylsalicylic acid is not the only acid present in effervescent tablets. Apart from acetylsalicylic acid, Aspro-Clear tablets contain also citric acid (C6H8O7, molecular mass 192.1 u), which reacts with hydrogen carbonate producing carbon dioxide. Acetylsalicylic acid is a monovalent acid and citr ...
Covalent Bonding
... Group 1 and 17 elements are always at ends Atoms that are less numerous are usually in the ...
... Group 1 and 17 elements are always at ends Atoms that are less numerous are usually in the ...
Aqueous Reactions and Solution Stoichiometry (Chapter 4)
... Water has many unique chemical and physical properties. Possibly one of the most important is its ability to dissolve other substances to form solutions. Solutions are homogeneous mixtures of two or more substances. The solvent (usually the substance present in the greatest quantity) causes the othe ...
... Water has many unique chemical and physical properties. Possibly one of the most important is its ability to dissolve other substances to form solutions. Solutions are homogeneous mixtures of two or more substances. The solvent (usually the substance present in the greatest quantity) causes the othe ...
summer fun - West Windsor-Plainsboro Regional School District
... The solubility of a solute is the amount that can be dissolved in a given quantity of solvent at a given temperature. For example, the solubility of lead (II) nitrate is 56 g/100 mL at 20oC. The solubilities of ionic solids in water vary over a wide range of values. For convenience, we divide compou ...
... The solubility of a solute is the amount that can be dissolved in a given quantity of solvent at a given temperature. For example, the solubility of lead (II) nitrate is 56 g/100 mL at 20oC. The solubilities of ionic solids in water vary over a wide range of values. For convenience, we divide compou ...