Question:
What is the oxidation number of Cl in \(\text{HOClO}_2\)?
What is the oxidation number of Cl in \(\text{HOClO}_2\)?
Show Hint
Rewrite HOClO2 as HClO3 and balance the charges.
Updated On: Oct 1, 2026
- \(+7\)
- \(+5\)
- \(+3\)
- \(+1\)
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept
\(\text{HOClO}_2\) is the structural way of writing chloric acid, \(\text{HClO}_3\). Its atoms are one H, one Cl and three O.
Step 2: Key Formula or Approach
Sum of oxidation numbers = 0 for a neutral molecule. H is \(+1\) and O is \(-2\).
Step 3: Calculation
Let Cl be \(x\):
\[ (+1)+x+3(-2)=0 \]
\[ x=+5 \]
Step 4: Check the other options
The value +7 belongs to perchloric acid \(\text{HClO}_4\). The value +3 belongs to chlorous acid \(\text{HClO}_2\), and +1 belongs to hypochlorous acid, HOCl. Our molecule has three oxygen atoms, so chlorine is +5, option (B).
Final Answer:
Chlorine in \(\text{HOClO}_2\) has oxidation number +5, option (B). \[ \boxed{+5} \]
\(\text{HOClO}_2\) is the structural way of writing chloric acid, \(\text{HClO}_3\). Its atoms are one H, one Cl and three O.
Step 2: Key Formula or Approach
Sum of oxidation numbers = 0 for a neutral molecule. H is \(+1\) and O is \(-2\).
Step 3: Calculation
Let Cl be \(x\):
\[ (+1)+x+3(-2)=0 \]
\[ x=+5 \]
Step 4: Check the other options
The value +7 belongs to perchloric acid \(\text{HClO}_4\). The value +3 belongs to chlorous acid \(\text{HClO}_2\), and +1 belongs to hypochlorous acid, HOCl. Our molecule has three oxygen atoms, so chlorine is +5, option (B).
Final Answer:
Chlorine in \(\text{HOClO}_2\) has oxidation number +5, option (B). \[ \boxed{+5} \]
Was this answer helpful?
0
0
Top MHT CET Chemistry Questions
- The temperature of $32^{\circ}C$ is equivalent to
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
- If a metal crystallises in bcc structure with edge length of unit cell $4.29 \times 10^{-8}\, cm$ the radius of metal atom is
- Which of the following oxides can act both as an oxidising agent as well as reducing agent ?
- "The mass and energy both are conserved in an isolated system", is the statement of
View More Questions
Top MHT CET Oxidation Number Questions
- What is the oxidation state of chromium in the compound \( \text{Cr}_2\text{O}_3 \)?
- What is the maximum oxidation state of an element in the periodic table?
- The oxidation number of oxygen in peroxides is __.
- What is the oxidation number of sulfur in sulfuric acid (H$_2$SO$_4$)?
- What is the oxidation state of sulfur in \( \text{H}_2\text{SO}_4 \)?
View More Questions
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions