Verified Solution • 2025–26 Session moderate

QNEET-2020-Ch-662: NEET 2020 Chemistry - Class 11 NEET-2020-Ch-662 Solution: For the reaction \(2Cl(g) Cl_2(g)\) the correct option is: \(…

For the reaction 2Cl(g)→Cl2(g)2Cl(g) \rightarrow Cl_2(g) the correct option is: ΔrH>0\Delta_r H > 0 and ΔrS<0\Delta_r S < 0 ΔrH<0\Delta_r H < 0 and ΔrS>0\Delta_r S > 0 ΔrH<0\Delta_r H < 0 and ΔrS<0\Delta_r S < 0 ΔrH>0\Delta_r H > 0 and ΔrS>0\Delta_r S > 0

Multiple Choice Options

  • A {\Delta _r}H &gt; 0 _ r _ H > 0 and {\Delta _r}S &lt; 0 _ r _ S < 0
  • B {\Delta _r}H &lt; 0 _ r _ H < 0 and {\Delta _r}S &gt; 0 _ r _ S > 0
  • C {\Delta _r}H &lt; 0 _ r _ H < 0 and {\Delta _r}S &lt; 0 _ r _ S < 0
  • D {\Delta _r}H &gt; 0 _ r _ H > 0 and {\Delta _r}S &gt; 0 _ r _ S > 0

Step-by-Step Verified Solution

Given reaction, 2Cl(g) _ Cl 2 (g) This is an endothermic reaction because it requires energy to break bonds. So, the reverse reaction is exothermic _ r H < 0 Also, two gaseous atoms combine together to form 1 gaseous molecule. So, the randomness, _ r S < 0

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