By thermal decomposition of which of the following compound very pure dinitrogen gas can be obtained?
- Ammonium dichromate
- Ammonium chloride
- Sodium Azide
- Barium Nitrate
The Correct Option is A
Solution and Explanation
Ammonium dichromate can give pure nitrogen on thermal decomposition. The chemical reaction for the same is
(NH4)2Cr2O7 (s) → Cr2O3(s) + N2(g)+4H2O
This is an exothermic reaction and it causes rapid evolution of gas and resembles a volcanic eruption.
Top Questions on p -Block Elements
- $\textbf{Choose the correct statements about the hydrides of group 15 elements.}$
A. The stability of the hydrides decreases in the order \(\text{NH}_3 > \text{PH}_3 > \text{AsH}_3 > \text{SbH}_3 > \text{BiH}_3\)
B. The reducing ability of the hydrides increases in the order \(\text{NH}_3 < \text{PH}_3 < \text{AsH}_3 < \text{SbH}_3 < \text{BiH}_3\)
C. Among the hydrides, \(\text{NH}_3\) is a strong reducing agent while \(\text{BiH}_3\) is a mild reducing agent.
D. The basicity of the hydrides increases in the order \(\text{NH}_3 < \text{PH}_3 < \text{AsH}_3 < \text{SbH}_3 < \text{BiH}_3\)
Choose the most appropriate from the option given below:- JEE Main - 2024
- Chemistry
- p -Block Elements
- Identify the correct statements about p-block elements and their compounds.
(A) Non metals have higher electronegativity than metals.
(B) Non metals have lower ionisation enthalpy than metals.
(C) Compounds formed between highly reactive nonmetals and highly reactive metals are generally ionic.
(D) The non-metal oxides are generally basic in nature.
(E) The metal oxides are generally acidic or neutral in nature.- JEE Main - 2024
- Chemistry
- p -Block Elements
- $\textbf{Reduction potential of ions are given below:}$
\[ \begin{array}{ccc} \text{ClO}_4^- & \text{IO}_4^- & \text{BrO}_4^- \\ E^\circ = 1.19 \, \text{V} & E^\circ = 1.65 \, \text{V} & E^\circ = 1.74 \, \text{V} \\ \end{array} \]
The correct order of their oxidising power is:- JEE Main - 2024
- Chemistry
- p -Block Elements
The number of oxygen atoms present in chemical formula of fuming sulphuric acid is _______.
- JEE Main - 2024
- Chemistry
- p -Block Elements
- Taking stability as the factor, which one of the following represents correct relationship?
- NEET (UG) - 2023
- Chemistry
- p -Block Elements
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Concepts Used:
Dinitrogen
Dinitrogen (N2) is a molecule composed of two nitrogen atoms that are covalently bonded together. It is the most abundant gas in the Earth's atmosphere, accounting for approximately 78% of its composition by volume.
Dinitrogen is a colorless, odorless, and inert gas, meaning it does not react easily with other elements or molecules. It is relatively unreactive due to its strong triple bond, which requires a high amount of energy to break.
Although dinitrogen is not directly involved in many biological processes, it plays a critical role in the Earth's nitrogen cycle. It is taken up by certain bacteria and converted into forms that can be used by plants, which in turn are consumed by animals. This process is known as nitrogen fixation and is essential for the growth and survival of many organisms.
Dinitrogen is also used in a variety of industrial processes, such as in the production of ammonia, which is used as a fertilizer and in the manufacture of explosives and other chemicals. It is also used as an inert gas in welding and in the preservation of food and pharmaceuticals.
Read More: Nitrogen Dioxide
Overall, dinitrogen is a ubiquitous molecule that plays a crucial role in both natural and industrial processes, and its properties and behavior are of great interest in a variety of scientific fields.