Sample
... 2- Some collisions between reactant molecules do not form products. This is most likely because : aThe molecules do not collide in the proper ratio bThe molecules do not have enough energy cThe concentration is too low dThe reaction is at equilibrium 3- What is the expected shape of ethane? a) b) c) ...
... 2- Some collisions between reactant molecules do not form products. This is most likely because : aThe molecules do not collide in the proper ratio bThe molecules do not have enough energy cThe concentration is too low dThe reaction is at equilibrium 3- What is the expected shape of ethane? a) b) c) ...
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... Dissolving Covalent Compounds • C12H22O11 (s) C12H22O11 (aq) • NO dissociation because NO ions • Sucrose dissolves in water because sugar is polar (-OH group), but dissociation does not occur. Sucrose molecules are simply separated from each other. No ions are formed ...
... Dissolving Covalent Compounds • C12H22O11 (s) C12H22O11 (aq) • NO dissociation because NO ions • Sucrose dissolves in water because sugar is polar (-OH group), but dissociation does not occur. Sucrose molecules are simply separated from each other. No ions are formed ...
Chapter 2 Water
... pH = pKa + log (x/x) = log(1) = 0 pH = pKa B. The Henderson-Hasselbalch Equation The above treatment should remind you of the Henderson-Hasselbalch Equation pH=pKa + log [A-]/[HA] This is the easiest equation to use when calculating buffer solution when you have a mixture of an acid (HA) and its con ...
... pH = pKa + log (x/x) = log(1) = 0 pH = pKa B. The Henderson-Hasselbalch Equation The above treatment should remind you of the Henderson-Hasselbalch Equation pH=pKa + log [A-]/[HA] This is the easiest equation to use when calculating buffer solution when you have a mixture of an acid (HA) and its con ...
CHEMISTRY FINAL EXAM REVIEW SHEET
... Arrhenius acid: donates hydrogen ions in solution. Arrhenius base: donates hydroxide ions in solution. Brønsted-Lowry acid: donates hydrogen ions in solution. Brønsted-Lowry base: accepts hydrogen ions in solution. The pH scale: 0---------------------7---------------------14 Monoprotic/diprotic/trip ...
... Arrhenius acid: donates hydrogen ions in solution. Arrhenius base: donates hydroxide ions in solution. Brønsted-Lowry acid: donates hydrogen ions in solution. Brønsted-Lowry base: accepts hydrogen ions in solution. The pH scale: 0---------------------7---------------------14 Monoprotic/diprotic/trip ...
Project Advance Chemistry 106 Sample Questions
... Which of the following stresses would shift the equilibrium to the left? A. B. C. D. E. ...
... Which of the following stresses would shift the equilibrium to the left? A. B. C. D. E. ...
Midterm 1 2009 (PDF format)
... b) The enthalpy change for a reaction is independent of the state of the reactants and products. c) Enthalpy is a state function. d) H is the value of q measured under conditions of constant volume. e) The enthalpy change of a reaction is the reciprocal of the ∆H of the reverse reaction. ...
... b) The enthalpy change for a reaction is independent of the state of the reactants and products. c) Enthalpy is a state function. d) H is the value of q measured under conditions of constant volume. e) The enthalpy change of a reaction is the reciprocal of the ∆H of the reverse reaction. ...
1 • Matter and Measurement - Chemistry with Mr. Gansle
... used up.] Know common indicators such as phenolphthalein for titrations with strong bases. Understand that a titration can be done with an acid-base reaction or a redox reaction. In each case, some sort of indicator must be used to tell when equivalent amounts of reactants have been mixed. ...
... used up.] Know common indicators such as phenolphthalein for titrations with strong bases. Understand that a titration can be done with an acid-base reaction or a redox reaction. In each case, some sort of indicator must be used to tell when equivalent amounts of reactants have been mixed. ...
Stoichiometry - WordPress.com
... • It is rare that we will have the exact amount of each reactant for a reaction. • One or more reactants are in excess – ie there is more than what is needed. • The reactant that is completely used up is said to be the limiting reactant. • It is the limiting reactant that must be used in stoichiomet ...
... • It is rare that we will have the exact amount of each reactant for a reaction. • One or more reactants are in excess – ie there is more than what is needed. • The reactant that is completely used up is said to be the limiting reactant. • It is the limiting reactant that must be used in stoichiomet ...
1 Chemistry 222
... acid is the same as the NaOH, we expect equivalence points to occur at 20, 40, and 60 mL of titrant added. From our pKa values, we can estimate the pH at the first two equivalence points because the primary species that are present are the amphiprotic forms. Midway to each equivalence point, pH is d ...
... acid is the same as the NaOH, we expect equivalence points to occur at 20, 40, and 60 mL of titrant added. From our pKa values, we can estimate the pH at the first two equivalence points because the primary species that are present are the amphiprotic forms. Midway to each equivalence point, pH is d ...
Carboxylic Acid Derivatives and Nitrogen Cpds
... hydrochloric acid to give a solution from which a crystalline solid J can be isolated. H decolourises aqueous bromine with the formation of a white precipitate K. No orange crystals are observed when 2,4-dinitrophenyihydrazine is added to H. However when H is heated with alkaline aqueous iodine and ...
... hydrochloric acid to give a solution from which a crystalline solid J can be isolated. H decolourises aqueous bromine with the formation of a white precipitate K. No orange crystals are observed when 2,4-dinitrophenyihydrazine is added to H. However when H is heated with alkaline aqueous iodine and ...
Exam 2 Review - Iowa State University
... Determining Empirical and Molecular Formulas (3.5) 1. A compound contains only the elements Al and O. Its elemental compositions is determined to be 53.0% aluminum and 47.0% oxygen. The mass of one mole of the compound is 102 g. What is the empirical formula of the compound? What is the molecular fo ...
... Determining Empirical and Molecular Formulas (3.5) 1. A compound contains only the elements Al and O. Its elemental compositions is determined to be 53.0% aluminum and 47.0% oxygen. The mass of one mole of the compound is 102 g. What is the empirical formula of the compound? What is the molecular fo ...
pH scale. Buffer solutions. Colligative properties of solutions
... An acid-base indicator is a substance which varies color of the solution according to the hydrogen ion concentration of its environment. An acid-base indicator is a substance which may exist in at least two (or more) tautomeric forms in equilibrium with one another. These forms have different struct ...
... An acid-base indicator is a substance which varies color of the solution according to the hydrogen ion concentration of its environment. An acid-base indicator is a substance which may exist in at least two (or more) tautomeric forms in equilibrium with one another. These forms have different struct ...
pH - OCCC.edu
... Write the ionization equilibrium for the acid. Write the equilibrium constant expression and its numerical value. Set up a table showing initial concentration, change, equilibrium concentration. Substitute equilibrium concentrations into the equilibrium constant expression. ...
... Write the ionization equilibrium for the acid. Write the equilibrium constant expression and its numerical value. Set up a table showing initial concentration, change, equilibrium concentration. Substitute equilibrium concentrations into the equilibrium constant expression. ...
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... • Acid – H+ ion (or H3O+) is only positive ion in soln –H+ ion is also called a PROTON –H3O+ is called a HYDRONIUM ion ...
... • Acid – H+ ion (or H3O+) is only positive ion in soln –H+ ion is also called a PROTON –H3O+ is called a HYDRONIUM ion ...
ICSE Board Class X Chemistry Board Paper – 2015
... (iv) Sulphuric acid is a strong acid compared to acetic acid. A strong acid has more ions than a weak one, and so, its solution will be a better electrical conductor than a weak acid. So, electrical conductivity of acetic acid is less in comparison of electric conductivity of sulphuric acid. (v) In ...
... (iv) Sulphuric acid is a strong acid compared to acetic acid. A strong acid has more ions than a weak one, and so, its solution will be a better electrical conductor than a weak acid. So, electrical conductivity of acetic acid is less in comparison of electric conductivity of sulphuric acid. (v) In ...
CHEM 210 Ch06
... pKa = -log(Ka) • As the value of Ka increases, pKa decreases. • Compounds with low pKa values are more acidic than compounds with high pKa values. • Each difference of 1 in pKa values represents a factor of 10 difference in acid strength. ...
... pKa = -log(Ka) • As the value of Ka increases, pKa decreases. • Compounds with low pKa values are more acidic than compounds with high pKa values. • Each difference of 1 in pKa values represents a factor of 10 difference in acid strength. ...