For the reaction 2H_{(g)} to H_{2_{(g)}},the | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) $1$. In the reaction $2H_{(g)} 	o H_{2_{(g)}}$,a chemical bond is formed between two hydrogen atoms to produce a hydrogen molecule. Bond formatio

Vedclass · Accepted Answer

$-, -$

Vedclass · Answer

(A) $1$. In the reaction $2H_{(g)} 	o H_{2_{(g)}}$,a chemical bond is formed between two hydrogen atoms to produce a hydrogen molecule. Bond formation is an exothermic process,so the enthalpy change $\Delta H$ is negative $(-)$.$2$. In the reaction,two moles of gaseous atoms are converted into one mole of gaseous molecules. This results in a decrease in the number of moles of gas,which leads to a decrease in the randomness or disorder of the system. Therefore,the entropy change $\Delta S$ is negative $(-)$.$3$. Thus,both $\Delta H$ and $\Delta S$ are negative.

For the reaction $2H_{(g)} \to H_{2_{(g)}}$,the signs of $\Delta H$ and $\Delta S$ are:

Similar Questions

If $p \rightarrow (\sim p \vee q)$ is false,then the truth values of $p$ and $q$ are respectively

The order of the differential equation whose solution is $y = a \cos x + b \sin x + c e^{-x}$ is:

In the circuit shown in the figure,the potential difference between points $A$ and $B$ is $16 \, V$. The current passing through the $2 \, \Omega$ resistance will be ................. $A$.

In non-cyclic photophosphorylation,the electron released by $PSI$ is accepted by ..........

The total number of valence electrons in $4.2 \, g$ of $N_3^-$ ion is ......... $N_A$. ($N_A$ = Avogadro number)

Vedclass Test Series

Exam Paper Generator

Online Exam Module