An experiment to investigate whether concentration of acid has an
effect on the reaction rate of the reaction between Calcium Carbonate
and Hydrochloric Acid.
1. The key factor I plan to investigate and what I will do to make my
experiment a fair test
The factor that I plan to investigate is whether the concentration of
acid (the acid being HCl) has any effect on the rate of reaction
between Calcium carbonate and Hydrochloric acid. I will vary the
concentration and calculate rate of reaction, and calculate the effect
of the factor by measuring the amount of gas given of during the
reaction, and finding out how much gas is given of every 15 seconds. I
will collect the gas by bubbling it into a gas collection tube in a
water bath.
I will use five different concentrations 80%, 70%, 60%, 50%, and 40%
acid. I will mix acid with water to get the desired concentration, and
for each experiment I will keep the volume of the acid and water
combined at 50 ml. For example in order to 80% concentration I will
mix 40 ml of acid, and 10 ml of water. For each different
concentration I will conduct 3 identical experiments, and collect my
results every 15 seconds. I will then average out the three different
results for one particular time and produce one result. I will collect
8 results per an experiment. I will repeat any measurements that don't
appear to follow the general trend.
Also to make sure that results are accurate I will use a 100 ml
measuring tube with marking for every 1 cm3. I will measure the liquid
in a test tube with 1 cm3 marking.
I will conduct my experiment in the laboratory. The equation for this
experiment is:
CaCo3 + 2HCL CaCL2 + H2O + CO2
The variables I plan to control
1. Surface area: The surface area of each marble chip should be kept
relatively the same because due to collision theory if more surface
area is available the number of particles of solid reactant available
for collision will increase. Therefore more collisions can occur, and
it is likely there will be more collisions with sufficient energy to
successfully lead to a reaction. I might not be able to keep the
surface area of my marble chips exactly the same but I will attempt to
keep it as similar as possible.
2.Volume of liquid: I will keep the amount of liquid at 50 ml, because
if I don't keep the amount of liquid constant I will change the amount
of acid in contact with the marble chips, because if there is more HCL
CL-, as the ions of H+ and OH- react to form H2O. These spectator ions
Cu (aq) + 2NO3 (aq) + 2Na+ (aq) + 2OH- (aq) → Cu(OH)2 (s) + 2Na+ (aq) + 2NO3(aq)
In the first 30 days I feel it’s imperative that I understand what your goals and expectations are for me in a management role. I intend on building on Absolute’s mission statement and our core values of Integrity, Respect, Accountability, Compassion, Teamwork, and Continuous Improvement. My philosophy for the first 30 days is gathering data, learning about my employees and learning company policy and procedure and again follows our mission statement. I have three sections that I need to have addressed in the first 30 days.
Acid-Base Titration I. Abstract The purpose of the laboratory experiment was to determine equivalence. points, pKa, and pKb points for a strong acid, HCl, titrated with a. strong base, NaOH using a drop by drop approach in order to determine. completely accurate data. The data for this laboratory experiment is as follows.
1. Observe my supervisor and other professionals at my practicum site as well as their relationships.
They found three key things in the research. These are, first, investing in strengths, second, surrounding themselves with the right people while maximizing their team and third, understanding their followers’ needs.
Experiment is to investigate the rate of reaction between hydrochloric acid and calcium carbonate Hydrochloric acid + Calcium Carbonate Þ Calcium Chloride + Water + Carbon Dioxide 2HCl (aq) CaCo3 (s) CaCl2(s) H2O (aq) CO2 (g) There are a number of variables in this experiment and these are listed below as input variables and outcome variables.
3.) If I were starting my own business, I wouldn’t just use one assessment method. I
Chemistry: Acid-Base Titration. Purpose: The objective of this experiment were: a) to review the concept of simple acid-base reactions; b) to review the stoichiometric calculations involved in chemical reactions; c) to review the basic lab procedure of titration and introduce the student to the concept of a primary standard and the process of standardization; d) to review the calculations involving chemical solutions; e) to help the student improve his/her lab technique Theory: Titration was used to study acid-base neutralization reaction quantitatively. In acid-base titration experiment, a solution of accurately KHP concentration was added gradually to another solution of NaOH concentration until the chemical reaction between the two solutions was completed. The equivalence point was the point at which the acid was completely reacted with or neutralized by the base.
The goal of almost any interview is to collect testimonial evidence. Successful interviews just don’t happen. There are many aspects and steps that lead the way to a successful interview. Planning before conducting an interview is the first step, but before planning all interviewers must understand the basic needs of all interviewees. All humans share the same needs. An investigator must understand these basic human needs if they wish to become a successful interviewer. The basic human needs that all humans share are, control, belonging, and intimacy. Control is considered the need for security; everyone wants to be able to control their environment and what is happening around them. Belonging is the need for social recognition and approval. Intimacy is the need for love and affection, everyone wants to be loved or feel important to other people. These human needs must be incorporated in every interview and interrogation. Incorporating these needs is an important first step or first aspect to be considered by an investigator. Building up these human needs builds up the self-image and esteem on the interviewee. It is essential to build and maintain self worth of the interviewee, no one likes to feel humiliated or excluded. If these needs are understood and met the chances of having a successful interview are much greater. Having a positive attitude about everything you do is important. The same thing can be said for interviewing. Having a positive attitude going into an interview will have a positive effect on the outcome of the interview. A positive attitude is reflected to the interviewee and makes them more comfortable. No one wants to talk to someone who is negative. A positive attitude can impact the interview more that any other factor. Understanding human needs and the importance...
a bigger one so I can fit the cross under it and also be able to pour
The first thing I am going to do is outline a general plan for this
There will be 3 scenarios/case studies and one must identify what is the best answer to each scenario/case study
pH is the measure of how acidic or basic a substance is. Soil acidity or alkalinity is important because it influences how easily plants can take up nutrients from the soil. pH stands for “potenz Hydrogen” where “potenz” meaning “the potential to be”. The degree of activity of hydrogen ions in solution determines the acidity or alkalinity of the solution. Acidic solutions have a high concentration of hydrogen ions; alkaline solutions have a low concentration.
When planning for our future it is important to have clear goals in mind and to understand the steps that need to be taken to achieve those goals. My long-term goal is to run my own counseling center and employee at least one other person. Some Skills I already possess that will allow me to succeed with this plan are my ability to relate to people and be consistent in following the steps needed, even though it will be a long and tedious process.