SSLC Chemistry Solution Chapter2 Gas Laws Mole Concept

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Board	SCERT, Kerala
Text Book	SCERT Based
Class	SSLC
Subject	Chemistry Solution
Chapter	Chapter 2
Chapter Name	Gas Laws Mole Concept
Category	Kerala SSLC

Kerala Syllabus SSLC Class 10 Chemistry Textbook Solution Chapter 2 Gas Laws Mole Concept

            SSLC Chemistry Part I

• Chapter 1: Periodic Table and Electronic Configuration
• Chapter 2: Gas Laws Mole Concept
• Chapter 3: Reactivity Series and Electrochemistry
• Chapter 4: Production of Metals



             SSLC Chemistry Part II

• Chapter 5: Compounds of Non-Metals
• Chapter 6: Nomenclature of Organic Compounds and Isomerism
• Chapter 7: Chemical Reactions of Organic Compounds

Chapter 2  Gas Laws Mole Concept Textbook Solution

Let us Assess

Qn 1.

Examine the data given in the table(Temperature and number of molecules of the gas are kept constant).

Pressure (P)	Volume (V)
1 atm	8 L
2 atm	4 L
4 atm	2 L

a) calculate PxV.
b) Which is the gas law realated to this?

• Answer)
  

  a) 8

  b) Boyle's Law

  
  

Qn 2.

Analyse the situations which given below and explain the gas law associated with it.
a) A balloon is being inflated.
b) When an inflated balloon is immersed in water, its size decreases.

• Answer)
  

  a) Avagadros Law

  b) Boyle's Law

  
  

Qn 3.

Certain data regarding various gases kept under the same conditions of temperature and pressure are given below.

Gas	Volume (L)	No.of molecules
Nitrogen	10 L	x
Oxygen	5 L
Ammonia	10 L
Carbon di oxide		2x

a) Complete the table.
b) Which gas law is applicable here?

• Answer)
  

  a)

  Gas	Volume (L)	No.of molecules
  Nitrogen	10 L	x
  Oxygen	5 L	x/2
  Ammonia	10 L	x
  Carbon di oxide	20 L	2x

  b) Avagadros Law

  
  

Qn 4.

a) Calculate the mass of 112L CO2 gas kept at STP ( molecular mass = 44).
b) how many molecules of CO2 are present in it?

• Answer)
  

  a) 112 L = 112/22.4

                = 5 mole

  Mass of 5 mole= 5GMM=5 x 44g= 220g

  b) 5 x 6.022 x 1023

  
  

Qn 5.

Calculate the volume of 170g of ammonia at STP? (Molecular mass - 17)

• Answer)
  

  170g NH3 = 170/17

                   =10 mol

  Volume of 10 mol NH3 =10 x 22.4 = 224 L

  
  

Qn 6.

Find out the number of moles of molecules present in the sample given below.
(GMM-N2 = 28g, H2O = 18g)
a) 56g N2

b)90g H20

• Answer)
  

  a) 56/28 = 2 mol

  b) 90/18 = 5 mol

  
  

Qn 7.

The molecular mass of ammonia is 17.
a) How much is the GMM of ammonia ?
b) Find out the number of moles of molecules present in 170g of ammonia.
c) Calculate the number of ammonia molecules present in the above sample of ammonia ?

• Answer)
  

  a) 17g

  b) 170/10 = 10 mol

  c) 10 x 6.022 x 1023

  
  

Qn 8.

The molecular mass of oxygen is 32.
a) What is the GMM of O2 ?
b) How many moles of molecules are there in 64g of oxygen? How many molecules        are there in it?
c) Calculate the number of oxygen atoms present in 64g of oxygen?

• Answer)
  

  a) 32 g

  b) 2 mol , 2 x 6.022 x 1023

  c) 4 x 6.022 x 1023

  
  

SSLC Chemistry Textbook Solution

            SSLC Chemistry Part I

• Chapter 1: Periodic Table and Electronic Configuration
• Chapter 2: Gas Laws Mole Concept
• Chapter 3: Reactivity Series and Electrochemistry
• Chapter 4: Production of Metals



             SSLC Chemistry Part II

• Chapter 5: Compounds of Non-Metals
• Chapter 6: Nomenclature of Organic Compounds and Isomerism
• Chapter 7: Chemical Reactions of Organic Compounds

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SSLC  Previous Year Questions with Solution	Click Here
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SSLC Mathematics	Click Here
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