हिंदी

Using Dilute Sulphuric Acid How Would You Differentiate Between: Copper and Magnesium How Would You Identify the Gaseous Products Evolved.

Advertisements
Advertisements

प्रश्न

Using dilute sulphuric acid how would you differentiate between:

Copper and magnesium

How would you identify the gaseous products evolved.

एक पंक्ति में उत्तर
Advertisements

उत्तर

Action of dil. H2SO4 on

Copper — has no action

Magnesium — produces H2 burns with blue flame with pop-sound. 

shaalaa.com
Application of Activity Series in the Preparation of Hydrogen
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 9: Practical Chemistry - Additional Questions

APPEARS IN

विराफ जे दलाल Simplified ICSE Chemistry [English] Class 9
अध्याय 9 Practical Chemistry
Additional Questions | Q 4.1

संबंधित प्रश्न

Give an equation to express the reaction between:

Steam and red hot iron


A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.

What do you observe when a few drops of red litmus solution are added to the turbid solution.


Which metal is preferred for collecting hydrogen from steam? Write the balanced equation for the case.


Based on the reactions of water on metals, arrange the following metals in increasing order of reactivity: iron, sodium, magnesium, zinc, calcium


Hydrogen is obtained by displacement from:

  1. dilute sulphuric acid
  2. dilute hydrochloric acid

Write equations using zinc and iron.
Why does copper not show similar behavior?


Metal in the powdered form reacts very slowly with boiling water, but it decomposes in steam. Name the metal.


When hydrogen is passed over a black solid compound A, the products are a 'colorless liquid' and a 'reddish-brown metal B'.

Substance B is divided into two parts each placed in separate test tubes.

Dilute HCl is added to one part of substance B and dilute HNO3 to the other.

  1. Name the substances A and B.
  2. Give two tests for the colourless liquid formed in the experiment.
  3. What happens to substance A when it reacts with hydrogen? Give reasons for your answer.
  4. Write an equation for the reaction between hydrogen and substance A.
  5. Is there any reaction between substance B and dilute hydrochloric acid? Give reasons for your answer.

Which of the following metals does not give hydrogen with acids?


Choose terms from the options given in brackets to complete this sentence.

Sodium ………………. reacts smoothly with cold water.

(metal, amalgam, in the molten state)


Name the following.

A metal which cannot be used for the preparation of hydrogen using dilute acids.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×