Student exploration titration gizmo answer key

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2/21/2018 Unit 2 Titration.doc - Google Drive Page 1 of 4 Name: ______________________________________ Date: ____________________ Student Exploration: Titration Pre-Lab Litmus is an example of an indicator, a substance that changes color depending on its pH (pH is a measure of the concentration of protons, or H + ions). In the Titration Gizmo™, you will use indicators to show how acids are neutralized by bases, and vice versa. To begin, check that 1.00 M NaOH is selected for the Burette, Mystery HBr is selected for the Flask, and Bromthymol blue is selected for the Indicator. 1. Look at the ask. What is the color of the bromthymol blue indicator? _ 2. What does this tell you about the pH of the solution in the ask? ______ Solutions with a pH below 7.0 are acidic, while those with a pH abov 3. Move the slider on the burette to the top to add about 25 mL of NaOH happens, and what does this tell you about the pH of the ask? __________________________________________________________________ Get the Gizmo ready: Activity A: Click Reset. Select 1.0 M HNO Acids and bases and Mystery NaOH for the Flask. Select Phenolphthalein for the Indica You will need a scienti c calculator f Introduction: When most acids dissolve in water, they dissociate into ion acid (HNO 3 ) dissociates into H + and NO 3 – ions. Question: How do acids and bases interact in solution? 1. Calculate: Concentration is measured by molarity (M), or moles per lite used to symbolize molarity. For example, if 0.6 moles of HNO 3 are water, you would say [HNO 3 ] = 0.6 M. A. Because HNO 3 is a strong acid, it dissociates almost comp means the concentration of H + is very nearly equal to tha https://drive.google.com/file/d/0B-MWn9oLJ0kmeEViS0RvaWxwVERZMHRkQzFIUVQxNWFIbXFJ/view 1/1 ...