Essay
Essay Unit 2A - titration and colorimetry
- Institution
- PEARSON (PEARSON)
Essay Unit 2A - titration and colorimetry, distinction received without any feedback, feel free to download and copy and paste without hesitation.
[Show more]
2 reviews
By: idaluko25 • 1 year ago
By: aahilpanjwani0 • 2 year ago
Content preview
Part 1 Preparation of a Standard Solution (SodiumCarbonate)
Calibration of the balance
Known Mass (g) 200.00
Mass on balance (g) 200.17
Difference (g) O.17
Percentage error of Balance = 0.005%
error of balance=(difference in mass/ known mass) x100
(0.07/200) x100=0.085
Percentage error of measurement = 0.17%
Risk Assessment
Science Location Risk assessor Assessment date
name
Risk No Description of Hazard Who will be Risk Rating Control Residue Risk
activity effected (H M L) Measures Rating (H M L)
Mixing wrong Physical me m Ask to work in l
chemicals due to hazard a quit lab with
noise control less people
around, if the
noise gets to
load stop till
the noise has
gone o a
working level
you are good
to work at
3 Liquid drops Electrical People around m Close circuit if l
onto Electrical hazard me not using,
circuit keep liquids at
a safe
distance, if
spillages do
happen or
liquids touch
, an electrical
circuit close
the
connection to
power
immediately
and call
teacher
4 trips and falls Physical me and the m make sure all L
hazard people around equipment is
u and the in the middle
teacher as of the desk,
they he to bags and stool
clean it up tucked under
the bench
making it hard
for you to trip
5 Acid on skin, Chemical Me and the m Using lab m
harmful acids hazard people around coats glasses
include me and lab coat.
hydrochloric being more
acid and sodium careful when
hydroxide, can dealing with
cause irritant on acids and
the skin glass wear.
Wash of if
come in
contact with
skin
Mass of Sodium Carbonate
Mass of weighing boat (g) 1.06
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 Hamzamallu. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £5.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
71184 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