Simple risk assessment question Watch

JacobBob
Badges: 10
Rep:
?
#1
Report Thread starter 1 month ago
#1
I was wondering if my answer to part vi is correct.
In the mark scheme the answer is (COOH)2 is toxic/harmfulName:  D2F7869D-D620-463C-A811-5BCF3C0F160F.jpeg
Views: 6
Size:  221.7 KBName:  9046B7F7-F2D7-445C-BBB2-17C7F464CCF8.jpeg
Views: 5
Size:  184.6 KB
0
reply
CuriosityYay
Badges: 17
Rep:
?
#2
Report 1 month ago
#2
I think you should use all the words: toxic, harmful and corrosive

At least one of them will be in the mark scheme
0
reply
JacobBob
Badges: 10
Rep:
?
#3
Report Thread starter 1 month ago
#3
(Original post by CuriosityYay)
I think you should use all the words: toxic, harmful and corrosive

At least one of them will be in the mark scheme
I used corrosive
But it wasn’t in the mark scheme

It also wasn’t in the rejected column so I’m not sure
0
reply
alstudent_2019
Badges: 14
Rep:
?
#4
Report 1 month ago
#4
(Original post by JacobBob)
I was wondering if my answer to part vi is correct.
In the mark scheme the answer is (COOH)2 is toxic/harmfulName:  D2F7869D-D620-463C-A811-5BCF3C0F160F.jpeg
Views: 6
Size:  221.7 KBName:  9046B7F7-F2D7-445C-BBB2-17C7F464CCF8.jpeg
Views: 5
Size:  184.6 KB
There are two parts to this question: Why it was suggested and why it's not necessary
It was suggested because the student used (COOH)2 or handled it at least, and COOH is an acid and acids are corrosive. However it was rejected because it was a weak acid in small quantities in the experiment.
1
reply
CuriosityYay
Badges: 17
Rep:
?
#5
Report 1 month ago
#5
(Original post by JacobBob)
I used corrosive
But it wasn’t in the mark scheme

It also wasn’t in the rejected column so I’m not sure
(Original post by alstudent_2019)
There are two parts to this question: Why it was suggested and why it's not necessary
It was suggested because the student used (COOH)2 or handled it at least, and COOH is an acid and acids are corrosive. However it was rejected because it was a weak acid in small quantities in the experiment.
They don't put them in the reject column, it is just ignored so put them all if you're not sure.

And that's why it is not corrosive because it is a weak acid like ethanoic acid which is present in vinegar and you eat that, so not that corrosive.
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

University open days

  • SOAS University of London
    Postgraduate Open Day Postgraduate
    Wed, 29 May '19
  • University of Exeter
    Undergraduate Open Day - Penryn Campus Undergraduate
    Thu, 30 May '19
  • Cranfield University
    Cranfield Forensic MSc Programme Open Day Postgraduate
    Fri, 31 May '19

How did your AQA A-level Business Paper 1 go?

Loved the paper - Feeling positive (179)
22.86%
The paper was reasonable (366)
46.74%
Not feeling great about that exam... (145)
18.52%
It was TERRIBLE (93)
11.88%

Watched Threads

View All