Relaciones Químicas Ácidos y Bases I: Definiciones, pH y neutralización por Robin Marks, M.A. Lectura Prueba Enseñe con esto 1. A hydrogen ion, H+, is the same as a(n): neutron electron proton hyrdoxide ion 2. Acidic foods can be identified by what taste? salty sour bitter sweet 3. OH- is called the: hydrate ion hydrogen ion hydronium ion hydroxide ion 4. Acids increase the concentration of what in water? H+ ions hydrate ions hydroxide ions OH- ions 5. According to the Brønsted-Lowry definition, bases are defined as: Molecules that dissociate to release OH- ions proton acceptors proton donors Molecules that dissociate to release protons 6. What is the concentration of H+ in pure water? 1 x 10-13 moles/liter 1 x 10-14 moles/liter 1 x 10-7 moles/liter 1 x 107 moles/liter 7. A solution with a pH of 11 has a H+ concentration of: 1 x 10-11 moles/liter 1 x 10-3 moles/liter 1 x 1011 moles/liter 1 x 103 moles/liter 8. Which substance has the lowest pH? milk NaOH pure water lemon juice 9. An unknown substance is added to a solution and the pH increases. The substance is: an acid a base a solvent sweet 10. You have a beaker containing 500 mL of a strong base, and you titrate it with 1M HCl until your pH 7 indicator just turns color, and then stop. The solution: Has become acidic Has been diluted Has been neutralized Will continue to change color 11. In the titration above, the color change happens after you’ve added 250 ml of the 1M HCl. What is the molarity of the strong base? 1.00 M .0500 M 0.250 M 0.125 M Resultados de Prueba
