Exam (elaborations)
OCR A Level Chemistry A PAG 4 Qualitative analysis of ions Exam Questions and Mark Scheme.
- Course
- Institution
OCR A Level Chemistry A PAG 4 Qualitative analysis of ions Exam Questions and Mark Scheme.
[Show more]
Seller
Follow
frackasaura
Reviews received
Content preview
, OCR A Level Chemistry A (H432) Chemistry B (H433)PAG 4: Qualitative analysis of ions
Practice Exam Questions and Mark Scheme
This resource includes exam questions from both Chemistry A and Chemistry B. It is not designed as a
topic test but is instead intended as a document to support the teaching and learning of Module 1 –
Development of practical skills in chemistry.
1. Three qualitative tests are carried out on a solution of an unknown compound.
Test 1: On heating with NaOH(aq), a pungent smelling gas evolves which turns red litmus paper
blue.
Test 2: On addition of AgNO3(aq), a white precipitate forms which is soluble in dilute NH3(aq).
Test 3: On addition of Na2CO3(aq), there is no visible reaction.
What is the unknown compound?
A. ammonium bromide, NH4Br
B. ammonium chloride, NH4Cl
C. hydrochloric acid, HCl
D. sodium chloride, NaCl
Your answer
[1]
2. Four pairs of solutions are mixed.
Which pair of solutions forms a white precipitate?
A NH4Cl (aq) and NaOH(aq)
B KBr(aq) and AgNO3(aq)
C FeCl 3(aq) and NH3(aq)
D Cr2(SO4)3(aq) and BaCl 2(aq)
Your answer [1]
3. Which of the following is a correct statement about the test for Fe2+ ions in solution?
A. add NaOH(aq); brown precipitate formed, soluble in NH3(aq)
B. add NaOH(aq); brown precipitate formed, insoluble in NH3(aq)
C. add NaOH(aq); green precipitate formed, soluble in NH3(aq)
D. add NaOH(aq); green precipitate formed, insoluble in NH3(aq)
Your answer
[1]
Created in ExamBuilder 1 © OCR 2020
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 or Stuvia-credit 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 frackasaura. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.48. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
66184 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 15 years now