Formal Lab report 2

Formal Lab report 2 - The NaOH Figure 23 Viability of...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
NaOH Figure 3 Figure 2 The Viability of Biodiesel as a Source of Energy Based Upon Calorimetry to a Conventional Fuel and its Toxicity Arjan S. Bains 21737753 UC Berkeley Chemistry 1A Lab Section 210
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
ABSTRACT Fossil fuels have run the world smoothly for many years, creating a global society that relies on the combustion of material to continue running. But, as fossil fuels run low, there is a great need for a viable substitute. In order to test the feasibility of certain substitutes- here biofuels- the alternate fuels were first tested for their toxicity, and then a possible fuel was burned in a calorimeter in order to test its effectiveness. The biodiesel was the least toxic substance in solution by percent. In calorimetry, less of the biofuel was combusted by mass to heat the water ten degrees Celsius. Therefore, biodiesel is a viable alternative since it is a relatively safe substance and can burn while releasing a similar amount of heat as ethanol (ethanol is here used as a comparison since it has been tested in the lab, and has been used in fuels already with success). ( ethanol.org ) INTRODUCTION The experiment carried out was based on the viability of biofuels in taking over the niche currently filled by fossil fuels in the community. This experiment allowed students to explore for themselves which of the biofuels would be the best choice for future use. The experiment first showed which of the possible alternatives were the most and least toxic, and later allowed the students to run a calorimeter to determine whether the biofuels can release chemical energy efficiently. Toxicity was determined by calculating the percentage of plant seeds that would germinate and grow when exposed to different biofuels that were in the same concentration by volume. The calorimetry lab let students find out how long and how much of a biofuel needed to be combusted to raise the temperature of a given amount of water. The data that were recovered from the labs should indicate which of the fossil fuel substitutes was the most favorable, based on toxicities and the amount of heat released in a combustion reaction using the biofuel. Using the data, the labs will show the difficulty in choosing new biofuels that are both efficient and will significantly reduce adverse impacts on the environment. The concern for new sources of “Green Energy” is becoming a defining quest in today’s world, and the importance of these labs includes introducing the green energy concern to students. EXPERIMENTAL METHODS
Background image of page 2
The experimental procedure began with students comparing the toxicities of the different biofuels. After diluting the biofuels to .625, 1.25, 2.5, 5 and 10 percent solutions, they then placed ~40 radish seeds inside of six Petri dishes. The different solutions and a control group of pure water were placed into a
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/12/2011 for the course CHEM 1A taught by Professor Nitsche during the Fall '08 term at Berkeley.

Page1 / 10

Formal Lab report 2 - The NaOH Figure 23 Viability of...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online