Heats of Reaction Lab Report
Purpose: To measure the heats of reaction for three related exothermic reactions and to verify Hess’s Law of Heat Summation.
NaOH(s) ( Na+(aq) + OH-(aq) ΔH = -10.6kcal/mol
NaOH(s) + H+(aq) + Cl-(aq) ( H2O + Na+(aq) + Cl-(aq) ΔH = -23.9kcal/mol
Kinetics of a Reaction
I. List of reagents & products
1. 1.0 M Copper(II) nitrate (Cu(NO3)2, 0.10 M Hydrochloric Acid (HCl), 0.010 M Potassium Iodide (KI), 0.040 M Potassium Bromate (KBrO3), 0.0010 M Sodium Thiosulfate (N2S2O3), 2% Starch solution, Water (H2O)
II. Summary of P...
Thermochemistry is the branch of chemistry that studies the energy and heat associated with chemical reactions and/or physical transformations. A reaction may release or absorb energy, and a phase may change, such as in melting and boiling. Thermochemistry focuses on these...
Title : Expt.1 Determination of the enthalpy (heat) of reaction of a monobasic acid with sodium hydroxide
Experiment no : 1
Experiment title : Determination of the enthalpy (heat) of reaction of a monobasic acid with sodium hydroxide
1) To understand the enthalpy chemistr...
CHEMICAL REACTIONS OF COPPER AND PERCENT YIELD
To gain familiarity with basic laboratory procedures, some chemistry of a typical transition element, and the concept of percent yield.
Apparatus and Chemicals
|0.5 g piece of no. 16 or no. 18 copper wire |evaporating d...
Calculation on the molar enthalpy change of a neutralization reaction
Principle H2SO4(aq)+2NaOH(aq)=Na2SO4(aq)+2H2O(l) The reaction is a exothermic reaction, when the heat released by it is absorbed by water, the temperature of the water increases. The heat produced by the reaction can be calculate...
Finding the Ratio of Moles of Reactants in a Chemical Reaction
The purposes of this lab are to measure the temperature change of the reaction between solutions of sodium hydroxide and phosphoric acid, calculate the enthalpy, H, of neutralization of...
Evaluating An Enthalpy Change That Cannot Be Measured Directly.
We were told that sodium hydrogencarbonate decomposes on heating to give sodium
carbonate, water and carbon dioxide as shown in the equation below:-
2NaHCO3(s)--------> Na2CO3 (s) + H2O (l) + CO2 (g)...
An investigation to show how the rate of reaction between hydrochloric acid and sodium thiosulphate is affected by the concentration of the acid
Place a conical flask on a piece of paper with a cross on it. Add hydrochloric acid and sodium thiosulphate, and record the amount of...
Unknown Lab Report
April 25th, 2006
The purpose of this lab was to identify two unknown bacteria cultures using various differential tests. The identification of these unknown cultures was accomplished by separating and differentiating possible bacteria based on specific biochemi...
2.54g of Caco3
2.53g of Cao
2.0 mol dm-3 hydrochloric acid
50cm3 measuring cylinder
I. I will weigh a weighing bottle containing 2.53g of calcium carbonate
II. Using a measuring cylin...
CHEM 2123 and 2125 – Organic Chemistry Lab I and II
GUIDELINES FOR WRITING LAB REPORTS INTRODUCTION
Writing reports in organic chemistry lab may differ from the way it’s done in general chemistry. One goal of this course is to introduce you to the record keeping methods used in research labs...
The mole is a convenient unit for analyzing chemical reactions. Avogadro’s number is equal to the mole. The mass of a mole of any compound or element is the mass in grams that corresponds to the molecular formula, also known as the atomic mass. In this experiment, you will observe th...
JOMO KENYATTA UNIVERSITY
AGRICULTURE AND TECHNOLOGY
DEPT: CIVIL ENGINEERING
UNIT: CHEMISTRY 1 (SCH 2109)
Determination of Concentration of Hydrochloric Acid in a Given Solution
by ARAKA BRAMWEL MBOGO
The purpose of this experiment was to classify different kinds of reactions and see their results. In this experiment, various reactions were made and observed. There are several different ways to know if a chemical reaction occurred. Firstly, if there is a temperature change, shown...
1. Title: The Process of Determining the Unknown Bacteria #9
July 5, 2011
2. Introduction: Each student was given unknown bacteria and was instructed to perform a variety of experimental tests that would help to identify their bacteria. During the process of identificati...
INTRODUCTION: Carbohydrates are the product that made up from carbon, hydrogen and oxygen. Carbohydrates are form by the combination of carbon dioxide and water molecules. The carbohydrates contain two specific functional group in it which is the hydroxyl groups and carbonyl gr...
Composition of a Post-1983 Penny Lab Report
Through the use of percent composition one can easily find out how much of a certain element is in a compound or an item such as a post-1983 penny.
The experiment will be using HCl a strong acid to dissolve all t...