MCQ
Conversion of oxygen to ozone represented by the equation $3{O_2} \to 2{O_3}$ is an endothermic reaction. Enthalpy change $\Delta H$ accompanying the reaction
- AIs negative
- ✓Is positive
- CIs zero
- DDepends on temperature
✓
Answer
Correct option: B.
Is positive
(b)For endothermic reaction, $\Delta H = + ve$.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
$A{l_2}{O_3}$ formation involves evolution of a large quantity of heat, which makes its use in
→Which of the following correctly explains the stability of benzene molecule?
Hydrogenation of $2-$ Butyne in the presence of Lindlar's catalyst gives
→Acidic ferric chloride solution on treatment with excess of potassium ferrocyanide gives a Prussian blue coloured colloidal species. It is :
The pressure exerted by the gaseous molecules is due to :
Which of the following electron transition in a hydrogen atom will require the largest amount of energy
Consider the following reversible reaction at equilibrium, $2{H_2}{O_{(g)}}$ $\rightleftharpoons$ $2{H_{2(g)}} + {O_{2(g)}}$; $\Delta H = 241.7\,kJ$ Which one of the following changes in conditions will lead to maximum decomposition of ${H_2}{O_{(g)}}$
→$A$ and $B$ is
→A mixture of gas expands form $0.03\, m^3$ to $0.06\, m^3$ at a constant pressure of $1\,M\, Pa$ and absorbs $84\, kJ$ of heat during the process. The change in internal energy of the mixture is.....$kJ$
→${C_2}{H_2}\xrightarrow[{1\% \,HgS{O_4}}]{{dil.\,{H_2}S{O_4}}}A\xrightarrow{{\left[ O \right]}}B\xrightarrow{{NaOH}}C\xrightarrow{{NaOH/CaO}}D$, $[D]$ is
→