Ncert Solutions Chemistry Class 11th

Get insights from 2k questions on Ncert Solutions Chemistry Class 11th, answered by students, alumni, and experts. You may also ask and answer any question you like about Ncert Solutions Chemistry Class 11th

2k
Questions
0
Discussions
1
Active Users
29
Followers

Have a question about Ncert Solutions Chemistry Class 11th? Ask our experts

Ask Your Question

Keep it short & simple. Type complete word. Avoid abusive language.

New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Redox Reactions

8.14. Consider the reactions:

Why does the same reductant, thiosulphate react differently with iodine and bromine?

10 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

The average O.N. of S in S₂O₃^2- is +2 while in S₄O₆^2- it is + 2.5. The O.N. of S in SO₄^2- is +6. Since Br₂ is a stronger oxidising agent than I₂, it oxidises S of S₂O₃^2- to a higher oxidation state of +6 and hence forms SO₄^2- ion. I₂, however, being weaker oxidising&nbs

Upvote

New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Redox Reactions

8.13. Identify the substance oxidised, reduced, oxidising agent and reducing agent for each of the following reactions.

19 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

Substance oxidised	Substance reduced	Oxidising agent	Reducing agent
(a) C₆H₁₂O₆	AgBr	C₆H₁₂O₆
(b) HCHO	[Ag (NH₃)₂]⁺	[Ag (NH₃)₂]⁺	HCHO
(c) HCHO	Cu²⁺	HCHO
(d) N₂H₄	H₂O₂	N₂H₄
(e) Pb	PbO₂	Pb

Upvote

New answer posted•a year ago

Ncert Solutions Chemistry Class 11th States of Matter

5.22. Critical temperature for CO₂ and CH₄ are 31.1°C and -81.9°C respectively. Which of these has stronger intermolecular forces and why?

4 Views|Posted a year ago

Asked by Payal Gupta

Answered by

Payal Gupta | Contributor-Level 10

a year ago

5.22. Higher the critical temperature, more easily the gas can be liquefied, i.e., greater are the intermolecular forces of attraction. Hence, CO₂ has stronger intermolecular forces than CH₄.

Upvote

New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Redox Reactions

8.12. How do you account for the following observations?
(a) Though alkaline potassium permanganate and acidic potassium permanganate both are used as oxidants, yet in the manufacture of benzoic acid from toluene we use alcoholic potassium permanganate as an oxidant. Why? Write a balanced redox equation for the reaction.

(b) When concentrated sulphuric acid is added to an inorganic mixture containing chloride, we get colourless pungent smelling gas HCl, but if the mixture contains bromide then we get red vapour of bromine. Why?

77 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

(a) Toluene can be oxidised to benzoic acid in acidic, basic and neutral media according to the following redox equations:

In the laboratory, benzoic acid is usually prepared by alcoholic KMnO₄ oxidation of toluene. However, in industry alcoholic KMnO₄ is preferred over acidic or alkaline&

Upvote

New answer posted•a year ago

Ncert Solutions Chemistry Class 11th States of Matter

5.21. In terms of Charles’ law explain why -273°C is the lowest possible temperature.

4 Views|Posted a year ago

Asked by Payal Gupta

Answered by

Payal Gupta | Contributor-Level 10

a year ago

5.21. At -273°C, volume of the gas becomes equal to zero, i.e., the gas ceases to exist.

Upvote

New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Redox Reactions

8.11. Whenever a reaction between an oxidising agent and a reducing agent is carried out, a compound of lower oxidation state is formed if the reducing agent is in excess and a compound of higher oxidation state is formed if oxidising agent is in excess. Justify this statement giving three illustrations.

40 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

The three examples are:

(i) When excess P_4? (reducing agent) reacts with F_2? (oxidizing agent), PF_3? is produced in which P has +3 oxidation number.
&

Upvote

New answer posted•a year ago

Ncert Solutions Chemistry Class 11th States of Matter

5.20. What would be the SI unit for the quantity PV²T²/n?

5 Views|Posted a year ago

Asked by Payal Gupta

Answered by

Payal Gupta | Contributor-Level 10

a year ago

5.20. SI unit of pressure, P = Nm^-2

SI unit of volume = m³

Si unit of temperature, T = K

SI unit of number of moles, n = mol

Thus, SI unit of pV²T²/n = (Nm^-2) (m³)² (K)²mol = Nm⁴K²mol^-1

Upvote

New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Redox Reactions

8.10. The compound AgF₂ is unstable compound. However, if formed, the compound acts as a very strong oxidising agent. Why?

29 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

In AgF₂, oxidation state of Ag is +2 which is very unstable. Therefore, it quickly accepts an electron to form the more stable +1 oxidation state.
Ag²⁺ + e^– →Ag⁺
Therefore, AgF₂, if formed, will act as a strong oxidising agent.

Upvote

New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Redox Reactions

8.9. Consider the reactions:
(a) 6CO₂(g) + 6H₂O(l) →C₆H₁₂O₆(s) + 6O₂(g)

(b) O₃(g) + H₂O₂(l) →H₂O(l) + 2O₂(g)
Why it is more appropriate to write these reactions as:
(a) 6CO₂(g) + 12H₂O(l) →C₆H₁₂O₆(s) + 6H₂O(l) + 6O₂(g)
(b) O₃(g) + H₂O₂ (l) →H₂O(l) + O₂(g) + O₂(g)
Also suggest a technique to investigate the path of above (a) and (b) redox reactions.

136 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

(a) Therefore, it is more appropriate to write the equation for photosynthesis as (iii) because it emphasises that 12H₂O are used per molecule of carbohydrate formed and 6H₂O are produced during the process.

(b) The purpose of writing O₂ two times suggests that O₂ is being obtained

Upvote

New answer posted•a year ago

Ncert Solutions Chemistry Class 11th Redox Reactions

8.8. While sulphur dioxide and hydrogen peroxide can act as an oxidising as well as reducing agents in their reactions, ozone and nitric acid act only as oxidants. Why?

37 Views|Posted a year ago

Asked by Vishal Baghel

Answered by

Vishal Baghel | Contributor-Level 10

a year ago

(i) In SO₂, O.N. of S is +4. In principle, S can have a minimum O.N. of -2 and maximum of +6. Therefore, S in SO₂ can either decrease or increase its O.N. and hence can act both as an oxidising as well as a reducing agent.

(ii) In H₂O₂, the O.N. of O is -1. In principle, O can have a minimum O

Upvote

Ncert Solutions Chemistry Class 11th

Questions

Discussions

Active Users

Followers