Determination of pKa James McDuffie ABSTRACT: In this lab‚ the pKa of unknown solution #4 was measured Introduction: This lab focused on the equilibrium constant‚ Ka. Ka is associated with chemical properties of acids. The equivalence point will be reached once the moles of OH- equal the moles of HA and once this point is reached‚ the PH changes very quickly. With the results‚ a titration curve should be produced. Experimental Section Materials and Methods: A buret with NaOH solution
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Baccalaureate Department Group 4 – Chemistry SL Lab no.2: Acid-base titration Student: Caterina Rende Dominis Teacher: Zrinka Toplićan Date: 19 November 2012 Data Collection and Processing (DCP) Aspect 1: Recording raw data Table 1 Table showing raw data collected from titration Known measurements 25 mL of diluted acid 0‚100 M of NaOH solution Measurement Number | V of alkali needed to neutralize acid /mL/ (±0.01 mL) | 1 | 26.4 | 2 | 26.1 | 3
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LAB REPORT 5 – ACID/BASE CHEMISTRY No credit will be given for this lab report if the Data section is not completely filled out and if the required photographs are not received. At least one photograph must show the student’s face. NOTE: This experiment is rather lengthy. Plan accordingly. OBJECTIVES 1. Define strong electrolyte‚ weak electrolyte‚ nonelectrolyte‚ acid‚ base‚ salt‚ strong acid‚ weak acid‚ strong base‚ weak base‚ and neutralization reaction. 2. Compare and contrast the chemical
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Input Input is the data that you put into the computer system for processing. Here are some common ways of feeding (подача) input data into the system: Typing on a keyboard. The computer responds (реагирует) to what you enter; that is‚ "echoes" what you type by displaying it on the screen in front of you. Pointing with a mouse. The mouse movement causes corresponding (соответствующее) movement of a pointer on the computer screen. Scanning with a wand reader (контактное считывающее устройство
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Determination is a positive emotion that involves persevering towards a difficult goal in spite of obstacles.[1][2] Determination occurs prior to goal attainment and serves to motivate behavior that will help achieve one’s goal. Empirical research suggests that people consider determination to be an emotion; in other words‚ determination is not just a cognitive state‚ but rather an affective state.[3] In the psychology literature‚ researchers have studied determination under other terms‚ including
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Determination of Equilibrium Constants Introduction Bromothymol blue is an indicator for many acid-base titrations. When adding different solutions within the indicator it is to react and change colors‚ in this experiment the different colors were blue‚ green‚ and yellow. In the following experiment‚ obtaining the absorbance levels for each one makes it possible to calculate the equilibrium constant. Materials and Methods For this specific experiment there are a few materials that are crucial
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Luck is the last Li Ka-Shing‚ is the man who was to “the most influential figures of Hong Kong” in 1981‚ who achieved the Commander of British Empire from the Queen in 1989 and who was the top ten world’s richest people of <<Forbes>> in 1999. From nothing to the richest man of Asia‚ Li’s experiences of his life become a legend in the business area. As one of the successful businessman of world‚ Li always believes in these three most important qualities. Firstly‚ Li is good at communication
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1. Introduction 1.1 Problem statement On which target groups should Ford focus with the selling of their new Ford Ka on the French small car market‚ to obtain a third of Renault’s market share within three years? 1.2 Market definition The market in which Ford Ka will operate‚ is the small car market in France. By small car market we mean category A & B‚ cars that are less than 390 cm long. Other cars are excluded‚ because the lack of information about this cars. 2. Internal analysis 2.1
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首先，介绍背景我们了解一下中国的经济，奥巴马政府和他妻子手很嫩China has 1.4 billion people.what does that mean.it means‚whoever chinese people give him one dollor‚he is a billionaire.can you just imagine how many opportunies you have in this dream land.2012.china gdp is 51932 billion Li Ka-shing was born on July 29 to a scholarly family in the ancient city of Chaozhou in eastern Guangdong Province‚ China. His father Li Yunjing was a primary school principal When Japanese troops invaded Chaozhou in 1939‚ factories were closed and schools
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Best segment is freedom lovers. The Ford Ka was scheduled for launch at the Paris Motor Show in October 1996. But Brand Manager‚ Gilles Moynier‚ needed to decide on the target market for the new product. The car industry was traditionally segmented into size tiers‚ but Europe’s market for small cars was changing rapidly and even alternative segmentations did not reveal a clear target for the Ka. This case introduces students to the fundamental marketing problem of market segmentation and target
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