An Introduction to Qualitative Analysis Purpose: Tests the ions of Mg2+, Ca2+, Sr2+, and Ba2+, and identify them separately. By using these observations, identify the unknown ion. Then tests the ions of SO42-, CO32-, Cl-, and I-,identify them separately, and use the observation to identify the unknown. Procedure Part I - Qualitative Analysis of Group 2 Elements Mix 0.02M K2CrO4 with each Mg(NO3)2, Ca(NO3)2, Sr(NO3)2 and Ba(NO3)2 together. Secondly, mix 0.1M (NH4)2C2O4 instead of 0.02M K2CrO4 together with the same reactants used before. Thirdly, mix 0.1M Na2SO4 with those reactants. Then, mix 0.1M NaOH with the same reactants used before again. Some precipitates should forms ,record the observations in Table 1. …show more content…
State the identity of your unknown (along with its sample number). Give the reasoning you used to arrive at this conclusion. The Unknown Z should be SO42- because it has a same property as SO42- does. When SO42- is added to Ba(No3)2, and AgNo3, it forms a ppt; for the unknown anion, when it is added to Ba(No3)2, and AgNo3, it forms a ppt as well. When HNO3 is added to BaSO4, the ppt disappeared; for the unknown anion, when HNO3 is added to unknown, the ppt disappeared too, therefore we can conclude that the unknown is SO42-. Follow-Up Questions: 1. Devise a sequence of reactions to follow (using filtering or centrifuging where necessary to remove precipitates) to identify an unknown containing two or more cations of Group 2 elements. The Group 2 elements are Mg, Ca, Sr, and Ba. To identify an unknown containing two or more cations of Group 2 elements, first add CrO4 into the solution. Then we could identify them with their colour. Next we add C2O4, if the ppt is formed, then we know Ca2+ is involved in the solution. Next we add OH into the solution, if a ppt formed, that means Mg2+ is involved in the solution. 2.Devise a sequence of reaction to follow (using filtering or centrifuging
A total of 1.5 mL was added to produce a pH of around 6. The mixture was stirred for an additional 30 minutes.
The process was then repeated for the second reaction but using 1.00-mL of a 6.00-M phosphoric acid solution and 4.00-mL of a 3.00-M sodium hydroxide solution.
To determine which ions are present in the two unknown solutions. This will be accomplished by mixing three known solutions with three testing solutions. You will use this information to determine which ions are present in the unknown solutions.
weak bases). After ranking the pH of these solutions, you will then test your predictions in the laboratory.
The aim of this study is to examine the maternal and fetal risks of adverse pregnancy outcomes such as gestational diabetes, stillbirth and other risks in relation to maternal obesity(1). It is clearly stated that the study was not original as it is claimed that previous studies that had been done were similar. Besides, there was no any obvious conflict of interest as the data was obtained directly from a validated database and no funding body was reported. Compare with previous studies, they had put into a broader context where they used a larger sample size that consists of 325,395 cases of completed singleton pregnancies to obtain a more confident quantification of the risks
means selected through purposive sampling. The number of participants ranged between 20 & 300 individuals in most of these qualitative studies the participants included clinical nursing accompanied by nurse educators in one study the participants were just clinical nurses & in another they were just nursing students
The study had the aim to investigate the side effects of SSRIs (Serotonin Reuptake Inhibitor) medication including "fluoxetine (Prozac), paroxetine (Aropax/ Paxil), sertraline (Zoloft), citalopram (Celexa), escitalopram (Lexapro) and fluvoxamine (Luvox)" (p. 1389). The interpretative phenomenological analysis described women's experiences who coping with "sexual difficulties as desire, arousal, orgasm and pain", caused by consumption from the medication (p. 1390).
Death is something that we all have to deal with, be it in our profession or in our daily lives. This article discusses the reasons why caring for dying patients is stressful for nurses and is a high risk for burn out. The article also gives findings related to the study and gives recommendations based on the results. The study shows that education is needed for the nurses that care for the dying patient.
One issue that sports have been facing recently is that of doping. The article “A qualitative analysis of the experiences of elite athletes who have admitted to doping for performance enhancement”, published in the International Journal of Sport Policy and Politics, by Kate Kirby, Aidan Moran, and Suzanne Guerin, provides insight as to the motives of athletes who dope, as well as what may help to deter doping in athletes. Kirby, Moran, and Guerin chose to look at athletes who had previously participated in doping. They wanted to look at possible reasons for the athletes’ doping, how that doping affected them socially, and the effectiveness of doping discouragements. Five elite male athletes who had admitted to doping agreed to participate in
My research design will be the use of the qualitative approach because it describes a person’s life experiences and situations. It focuses on a person’s experience as well as elaborating on the uniqueness of the individual. As a social inquiry, qualitative research focuses on the way people analyze and make sense of their experience and the world in which they live (Schutz, 1994). I will use the qualitative approach to explore nurses’ behaviors/ attitudes, perspectives, experiences and feelings before and after being assaulted by a mentally ill patient with emphasize on measuring nurses’ attitudes after the assault and how it affects their ability to provide care. Some of my research questions will come from Implicit Association
This study was conducted using qualitative approach. With the aim to exploring patient’s and caregivers experience of gaining access to acute stroke care Harrison et al., (2012). Qualitative approach is appropriate as the study is therefore, concerned with exploring and understanding human experience as they occur and interpret in real life, (Cook, et al., 2013). It can be argued that qualitative research focuses on the credibility of the evidence presented as an authentic account and accurate interpretation of the respondent’s viewpoints in relation to the research question being explored (Burns, et al. (2015). However, the participant could be lying about their experience, therefore qualitative cannot be benchmarked as they depend on participant
This qualitative research is going to explore why married men and married women do not participate in regular physical exercise. Regular physical exercise is an integral part of maintain a healthy lifestyle. Total data analysis of why married men and married women will be done. There are various reasons such as work load, insecurities, children etc. which effect the physical activity of the married men and married women. We are also going to explore the similarities and differences between why married men and married women do not participate in regular physical exercise.
Executive Summary This guide to using qualitative research methodology is designed to help you think about all the steps you need to take to ensure that you produce a good quality piece of work. The guide starts by telling you what qualitative methodology is and when to use it in the field (understand people’s belief system, perspectives, experiences). It also flags the most important ethical issues that you will encounter (consent and confidentiality). The second part of the guide tackles how you can concretely develop qualitative research designs; starting from clearly
3. A few drops of 6 M acetic acid were added until it became basic.
Within this Chapter the reader will be able to have a detailed understanding of the process of the research. Through my qualitative descriptive approach, I will be able to focus on how to support children in the classroom through the experience of my participants. The way I plan on collecting data is by conducting visits in three different