Other
Applied science Unit 2
- Institution
- PEARSON (PEARSON)
Practical scientific procedures and techniques, Distinction grade level, complete with graphs, tables and calculations included.
[Show more]
Seller
Follow
Content preview
Keeping up the StandardsTitrations
The experiment aims to find out the concentration of an unknown
solution.
Titration Introduction:
Titration is a process of determining the concentration of an
unknown solution using a solution of known concentration.
In this experiment, hydrochloric acid is used to react sodium
carbonate until it becomes neutral.
Use of titration:
Titration is used in industry to find out the concentration of unknown
solutions.
Equation:
Na2CO3(aq) + 2HCl(aq) 2NaCl(aq) + CO2(g) + H2O(l)
Abstract:
A standard sodium carbonate solution was prepared by weighing out
2.65g of anhydrous sodium carbonate. It was then transferred to a
beaker and dissolved in water. The solution was then transferred to a
volumetric flask (250 cm3) The mixture was then mixed and labelled.
This standard solution was used to standardise hydrochloric acid and
0.1 mol/dm-3 were determined.
,Risk Assessment:
Substance Hazard Damage Prevention
Hydrochloric acid Redness, Handle with
(HCl) discomfort, and care. Wear a
severe skin lab coat. Put
Corrosive burns can result on gloves and
from skin safety
contact. The goggles. Do
eye may suffer not inhale the
Toxic from severe vapour or
burns and long- mist. Avoid
term damage. If eating or
inhaled, it is drinking in
poisonous and the lab.
Irritant
could irritate
the lungs.
Sodium Having trouble Handle with
carbonate breathing when care. Wear a
(Na2CO3) sodium lab coat. Put
Irritant carbonate is on gloves and
inhaled, serious safety
respiratory goggles. Do
problems. not inhale the
Stomach upset vapour or
or digestive mist. Avoid
tract may eating or
become drinking in
severely the lab.
irritated if you
accidentally
swallow sodium
, carbonate.
Oral, chest, or
abdominal pain;
skin or eye
irritation.
Indicator Prolong Handle with
(Phenolphthalein) exposure with care. Wear a
high lab coat. Put
Flammable phenolphthalei on gloves and
n safety
concentrations goggles. Do
can cause skin not inhale the
rashes, vapour or
vomiting, mist. Avoid
Health hazard comas, and eating or
(harmful) even death. drinking in
In addition to the lab.
this, exposure
to
phenolphthalei
n may cause
respiratory tract
irritation, eye
irritation, skin
irritation,
gastrointestinal
fever, and blood
pressure to rise.
Equipment (glass Explode in Handle with
breakage) elevated care. Keep
temperature, the working
alkaline are clear and
conditions. May the surface
Health hazard cause injuries, clean.
(harmful) lead to
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller mkkaur177. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £19.09. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
61005 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now