Question:
When potassium permanganate is heated to 513 K it forms
When potassium permanganate is heated to 513 K it forms
Show Hint
This is a common reaction used to prepare oxygen in the lab. The purple color of KMnO\(_4\) changes to the green color of K\(_2\)MnO\(_4\).
Updated On: Apr 24, 2026
- Mn\(_2\)O\(_3\) and O\(_2\)
- MnO\(_2\) and K\(_2\)O
- Mn\(_2\)O\(_3\), MnO\(_2\) and K\(_2\)O
- K\(_2\)MnO\(_4\), MnO\(_2\) and O\(_2\)
- K\(_2\)MnO\(_4\) and O\(_2\)
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Potassium permanganate (KMnO\(_4\)) is a strong oxidizing agent. It decomposes upon heating.
Step 2: Detailed Explanation:
When heated to around 513 K (240\(^\circ\)C), KMnO\(_4\) decomposes according to the following reaction: \[ 2KMnO_4 \xrightarrow{\Delta} K_2MnO_4 + MnO_2 + O_2 \] The products are potassium manganate (K\(_2\)MnO\(_4\)), manganese dioxide (MnO\(_2\)), and oxygen gas (O\(_2\)).
Step 3: Final Answer:
The products are K\(_2\)MnO\(_4\), MnO\(_2\), and O\(_2\).
Potassium permanganate (KMnO\(_4\)) is a strong oxidizing agent. It decomposes upon heating.
Step 2: Detailed Explanation:
When heated to around 513 K (240\(^\circ\)C), KMnO\(_4\) decomposes according to the following reaction: \[ 2KMnO_4 \xrightarrow{\Delta} K_2MnO_4 + MnO_2 + O_2 \] The products are potassium manganate (K\(_2\)MnO\(_4\)), manganese dioxide (MnO\(_2\)), and oxygen gas (O\(_2\)).
Step 3: Final Answer:
The products are K\(_2\)MnO\(_4\), MnO\(_2\), and O\(_2\).
Was this answer helpful?
0
0
Top KEAM Chemistry Questions
- The pH of a solution obtained by mixing 60 mL of 0.1 M BaOH solution at 40m of 0.15m HCI solution is
- $4\, g$ of copper was dissolved in concentrated nitric acid. The copper nitrate solution on strong heating gave $5\, g$ of its oxide. The equivalent weight of copper is :
- Green chemistry deals with
- Neopentyl bromide undergoes dehydrohalogenation to give alkenes even though it has no $\beta$- hydrogen. This is due to
- Plot of $ log\text{ }x/m $ against log $p$ is a straight line inclined at an angle of $ 45{}^\circ $ . When the pressure is $ 0.5 \,arm $ and Freundlich parameter. $ k $ is $ 10 $ , the amount of solute adsorbed per gram of adsorbent will be $ (log\text{ }5=0.6990) $
View More Questions
Top KEAM properties of d block elements Questions
- The catalytic activity of the transition metals and their compounds is ascribed to:
- In which one of the following, d-d transition involves absorption in the ultraviolet region
- An alloy of transition metal containing a non transition metal as a constituent is
- The most common oxidation states of chromium are
- Which of the following statement is true about potassium permanganate?
View More Questions
Top KEAM Questions
- i.$\quad$ They help in respiration ii.$\quad$ They help in cell wall formation iii.$\quad$ They help in DNA replication iv. $\quad$They increase surface area of plasma membrane Which of the following prokaryotic structures has all the above roles?
- A body oscillates with SHM according to the equation (in SI units), $x = 5 cos \left(2\pi t +\frac{\pi}{4}\right) .$ Its instantaneous displacement at $t = 1$ second is
- The pH of a solution obtained by mixing 60 mL of 0.1 M BaOH solution at 40m of 0.15m HCI solution is
Kepler's second law (law of areas) of planetary motion leads to law of conservation of
- If $\int e^{2x}f' \left(x\right)dx =g \left(x\right)$, then $ \int\left(e^{2x}f\left(x\right) + e^{2x} f' \left(x\right)\right)dx =$
View More Questions