Final Review
... c. Definite volume; shape of container; no intermolecular attractions d. Volume and shape of container; no intermolecular attractions e. Volume and shape of container; strong intermolecular attractions 102. Which transformation is evaporation? a. liquid ---> solid d. solid ---> gas b. liquid ---> ga ...
... c. Definite volume; shape of container; no intermolecular attractions d. Volume and shape of container; no intermolecular attractions e. Volume and shape of container; strong intermolecular attractions 102. Which transformation is evaporation? a. liquid ---> solid d. solid ---> gas b. liquid ---> ga ...
CHEMISTRY SEC 06 SYLLABUS
... chemistry. Questions will be set in English and must be answered in English. The examination will be structured as follows: Paper I consists of a written paper and a practical component and is to be taken by all candidates registered for the examination; the practical component is assessed separatel ...
... chemistry. Questions will be set in English and must be answered in English. The examination will be structured as follows: Paper I consists of a written paper and a practical component and is to be taken by all candidates registered for the examination; the practical component is assessed separatel ...
2012 Chem 13 News Exam
... involves the following sequence of reversible reactions. When the system reaches a state of dynamic equilibrium, which of the following statements is true? ...
... involves the following sequence of reversible reactions. When the system reaches a state of dynamic equilibrium, which of the following statements is true? ...
Structural Studies on Sulfated Glycopeptides from the Carbohydrate
... 4GlcA@l-3unit. In turn this unit is further elongated with &,5-G1~Aas can be deduced from the signals at 6 = 5.184 and ‘D-FT, a flow-through fraction (not shown in Fig. 2). 6 = 5.896 ppm which are characteristic for the H-1 and H-4 atoms of A4,5-G1~A, respectively (18, 19). This leaves two molar rat ...
... 4GlcA@l-3unit. In turn this unit is further elongated with &,5-G1~Aas can be deduced from the signals at 6 = 5.184 and ‘D-FT, a flow-through fraction (not shown in Fig. 2). 6 = 5.896 ppm which are characteristic for the H-1 and H-4 atoms of A4,5-G1~A, respectively (18, 19). This leaves two molar rat ...
CHEM 30
... If an equilibrium constant for a system has a value of 5.62 x 1049, would you expect to find mostly reactant or mostly product after the system has come to equilibrium? ...
... If an equilibrium constant for a system has a value of 5.62 x 1049, would you expect to find mostly reactant or mostly product after the system has come to equilibrium? ...
File
... Super-absorbent polymers have the ability to absorb 200-300 times their own mass of water. They are classified as hydrogels and they are widely used in personal disposable hygiene products such as babies’ nappies (diapers). These polymers are commonly made by the polymerisation of compound K mixed w ...
... Super-absorbent polymers have the ability to absorb 200-300 times their own mass of water. They are classified as hydrogels and they are widely used in personal disposable hygiene products such as babies’ nappies (diapers). These polymers are commonly made by the polymerisation of compound K mixed w ...
X012/12/02
... of potassium iodide solution. Pour these into a dry 100 cm3 glass beaker and place the beaker on the bench. 2. Measure out 5 cm3 of hydrogen peroxide solution and start the timer. 3. Add the hydrogen peroxide solution to the beaker. When the blue/black colour just appears, stop the timer and rec ...
... of potassium iodide solution. Pour these into a dry 100 cm3 glass beaker and place the beaker on the bench. 2. Measure out 5 cm3 of hydrogen peroxide solution and start the timer. 3. Add the hydrogen peroxide solution to the beaker. When the blue/black colour just appears, stop the timer and rec ...
Chem12 Buffer/Titration : Probs
... 63) If you were given two unknown acids of equal concentration, briefly describe how you would identify the stronger acid. What testing material or instrument would you use, and how would you interpret the results ? ...
... 63) If you were given two unknown acids of equal concentration, briefly describe how you would identify the stronger acid. What testing material or instrument would you use, and how would you interpret the results ? ...
Practice Toxins Mid-Unit Test 08-09
... (A) single displacement (B) double displacement (C) combination reaction (D) decomposition reaction ______2.Calcium Chloride is abbreviated (A) CaCl (C) Ca2Cl (B) CaCl2 (D) Cl2Ca ______3. What is the molarity of 3.5 moles of NaCl in 5.0 liters of water? (A) 1.43 M (B) 0.7 M (C) 0.7 moles (D) 17.5 M ...
... (A) single displacement (B) double displacement (C) combination reaction (D) decomposition reaction ______2.Calcium Chloride is abbreviated (A) CaCl (C) Ca2Cl (B) CaCl2 (D) Cl2Ca ______3. What is the molarity of 3.5 moles of NaCl in 5.0 liters of water? (A) 1.43 M (B) 0.7 M (C) 0.7 moles (D) 17.5 M ...
SOLUBILITY RULES FOR IONIC COMPOUNDS IN WATER
... 8. Write the balanced net ionic equation for each of the following, each of which results in a reaction occurring. Indicate the phase of each reactant and product. (a) An acidified solution of hydrogen peroxide is added to a solution of sodium iodide. (b) Chlorine gas is passed over powdered alumin ...
... 8. Write the balanced net ionic equation for each of the following, each of which results in a reaction occurring. Indicate the phase of each reactant and product. (a) An acidified solution of hydrogen peroxide is added to a solution of sodium iodide. (b) Chlorine gas is passed over powdered alumin ...
04 Reactions in Aqueous Solution
... The solvent is the substance present in the larger amount Solution ...
... The solvent is the substance present in the larger amount Solution ...
Page 1 of 25
... c. Definite volume; shape of container; no intermolecular attractions d. Volume and shape of container; no intermolecular attractions e. Volume and shape of container; strong intermolecular attractions 102. Which transformation is evaporation? a. liquid ---> solid d. solid ---> gas b. liquid ---> ga ...
... c. Definite volume; shape of container; no intermolecular attractions d. Volume and shape of container; no intermolecular attractions e. Volume and shape of container; strong intermolecular attractions 102. Which transformation is evaporation? a. liquid ---> solid d. solid ---> gas b. liquid ---> ga ...
acid
... Chlorous acid (HClO2) is a weak acid. Pyridine (C5H5N) is a weak base. Indicate the behavior of these two substances when added to water, according to Bronsted theory. HClO2(aq) + H2O(l) H3O+(aq) + ClO2-(aq) C5H5N(aq) + H2O(l) C5H5NH+(aq) + OH-(aq) ...
... Chlorous acid (HClO2) is a weak acid. Pyridine (C5H5N) is a weak base. Indicate the behavior of these two substances when added to water, according to Bronsted theory. HClO2(aq) + H2O(l) H3O+(aq) + ClO2-(aq) C5H5N(aq) + H2O(l) C5H5NH+(aq) + OH-(aq) ...
Review Final 111 Lect
... 1. Which of the following compounds will produce an acidic solution when dissolved in water? a. NO2 b. NaClO4 c. K2SO3 d. Na2O e. NaCN 2. Which of the following compounds will produce a basic solution when dissolved in water? a.) K2O b. HNO3 c. NH4Cl d. HBr e. KBr 3. For the equilibrium given below, ...
... 1. Which of the following compounds will produce an acidic solution when dissolved in water? a. NO2 b. NaClO4 c. K2SO3 d. Na2O e. NaCN 2. Which of the following compounds will produce a basic solution when dissolved in water? a.) K2O b. HNO3 c. NH4Cl d. HBr e. KBr 3. For the equilibrium given below, ...
Chem 173: Final Exam Review Short Answer and Problems 1
... KP = 0.250 at 1100 K for the following equilibrium: 2 SO2 (g) + O2 (g) ÷ 2 SO3 (g) For this reaction K = ________________________, and for the following reaction: SO2 (g) + 1/2 O2 (g) ÷ SO3 (g) KP = __________________________ . ...
... KP = 0.250 at 1100 K for the following equilibrium: 2 SO2 (g) + O2 (g) ÷ 2 SO3 (g) For this reaction K = ________________________, and for the following reaction: SO2 (g) + 1/2 O2 (g) ÷ SO3 (g) KP = __________________________ . ...
Molarity = M (Concentration of Solutions)
... Problem: Calcium Oxalate was precipitated from blood by the addition of Sodium Oxalate so that calcium ion could be determined. In the blood sample. The sulfuric acid solution that the precipitate was dissolved in required 2.05 ml of 4.88 x 10-4 M KMnO4 to reach the ...
... Problem: Calcium Oxalate was precipitated from blood by the addition of Sodium Oxalate so that calcium ion could be determined. In the blood sample. The sulfuric acid solution that the precipitate was dissolved in required 2.05 ml of 4.88 x 10-4 M KMnO4 to reach the ...
ATOMS, MOLES AND STOICHIOMETRY
... mass = 1.5 x 286 = 429g TITRATIONS There are several types of titration; we will only focus on ACID-BASE titration’s. Titration’s are used to find the concentration of an acid or alkali (base) An indicator is used to show the ‘end-point’ which is when the acid has reacted with all of the alkali Acid ...
... mass = 1.5 x 286 = 429g TITRATIONS There are several types of titration; we will only focus on ACID-BASE titration’s. Titration’s are used to find the concentration of an acid or alkali (base) An indicator is used to show the ‘end-point’ which is when the acid has reacted with all of the alkali Acid ...
Acid
An acid (from the Latin acidus/acēre meaning sour) is a chemical substance whose aqueous solutions are characterized by a sour taste, the ability to turn blue litmus red, and the ability to react with bases and certain metals (like calcium) to form salts. Aqueous solutions of acids have a pH of less than 7. Non-aqueous acids are usually formed when an anion (negative ion) reacts with one or more positively charged hydrogen cations. A lower pH means a higher acidity, and thus a higher concentration of positive hydrogen ions in the solution. Chemicals or substances having the property of an acid are said to be acidic.There are three common definitions for acids: the Arrhenius definition, the Brønsted-Lowry definition, and the Lewis definition. The Arrhenius definition defines acids as substances which increase the concentration of hydrogen ions (H+), or more accurately, hydronium ions (H3O+), when dissolved in water. The Brønsted-Lowry definition is an expansion: an acid is a substance which can act as a proton donor. By this definition, any compound which can easily be deprotonated can be considered an acid. Examples include alcohols and amines which contain O-H or N-H fragments. A Lewis acid is a substance that can accept a pair of electrons to form a covalent bond. Examples of Lewis acids include all metal cations, and electron-deficient molecules such as boron trifluoride and aluminium trichloride.Common examples of acids include hydrochloric acid (a solution of hydrogen chloride which is found in gastric acid in the stomach and activates digestive enzymes), acetic acid (vinegar is a dilute solution of this liquid), sulfuric acid (used in car batteries), and tartaric acid (a solid used in baking). As these examples show, acids can be solutions or pure substances, and can be derived from solids, liquids, or gases. Strong acids and some concentrated weak acids are corrosive, but there are exceptions such as carboranes and boric acid.