Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

How can we identify compounds (salts or gases) based on their change in colour or smell?
Asked by minnumurali13 | 12 May, 2020, 11:40: AM
answered-by-expert Expert Answer
In chemistry, Various compounds are separated on the basis of their different characteristics like-colour, smell and chemical reactions. 
Ther is not a single method by which all the salts can be idetntified. We study all these procedures in the branch of chemistry which is known as 'analytical chemistry' and these various methods are called as 'qualitative analysis'.
We can identify various salts by these various procedures-
(1) Appearance of compound-  For example, Cr+3 is violet, Cu+2  is blue.
(2) Heating effect
(3) Flame test
(4) Solubility in water
(5) Reaction with nitric acid
(6) Reaction with sodium hydroxide.
(7) Reaction with ammonia.
(8) Reaction with sodium chlolride.
(9) Reaction with silver nitrate.
 
Answered by Ravi | 12 May, 2020, 06:09: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 10 - Chemistry
how we get the result of NH3+ HCL =NH4CL
Asked by shoaibhakak41 | 18 Jan, 2023, 02:17: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
an iron metal compound 'Y', after decomposition changes into a solid brown substance and evolve a gas having characteristic odour of burning sulphur. Write the chemical reaction associated with this observation.
Asked by nehashekh291 | 03 Jan, 2023, 03:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
solve this
question image
Asked by Sunita | 21 Jul, 2022, 10:18: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
solve this
question image
Asked by labheshvaidya | 20 Jul, 2022, 10:59: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
How to Identify the solid liquid gaseous and aqueous states
Asked by ansheera3236 | 11 Jul, 2022, 05:05: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
State the type of chemical reactions and chemical equations that take place in the following: (i) Magnesium wire is burnt in air. (ii) Electric current is passed through water. (iii) Ammonia and hydrogen chloride gases’are mixed.
Asked by pachchigarkeyur | 08 Mar, 2022, 12:05: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
What are endothermic and exothermic reactions?
Asked by radhikaraut258 | 25 Feb, 2022, 09:07: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
what is chemical reaction
Asked by siwach.mukesh78 | 03 Nov, 2021, 08:48: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
Is corrosion both a chemical as well as physical change?
Asked by Trisha Gupta | 23 Sep, 2021, 01:57: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
what is chemical change
Asked by abhishek707356 | 10 Sep, 2021, 10:29: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×