A reaction proceeds through two paths I and II to convert X → Z. What is the correct relationship between Q, Q1 and Q2 ?

Question

A reaction proceeds through two paths I and II to convert X → Z. <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/54e93ce7d808f537f4586e76bc79b23e-.jpeg" /> What is the correct relationship between Q, Q1 and Q2 ? (A) Q = Q1 × Q2 (B) Q = Q1 + Q2 (C) Q = Q2 - Q1 (D) Q = Q1 / Q2

Tardigrade Admin · Accepted Answer

Hess's Law of Constant Heat Summation (or just Hess's Law) states that regardless of the multiple stages or steps of a reaction, the total enthalpy change for the reaction is the sum of all changes.

Q. $A$ reaction proceeds through two paths $I$ and $II$ to convert $X \to Z$ .

What is the correct relationship between $Q$ , $Q_{1}$ and $Q_{2}$ ?

$Q = Q_{1} \times Q_{2}$

$Q = Q_{1} + Q_{2}$

$Q = Q_{2} - Q_{1}$

$Q = Q_{1} / Q_{2}$

Hess's Law of Constant Heat Summation (or just Hess's Law) states that regardless of the multiple stages or steps of a reaction, the total enthalpy change for the reaction is the sum of all changes.

Q. A reaction proceeds through two paths I and II to convert X→Z. What is the correct relationship between Q, Q1​ and Q2​ ?

Q=Q1​×Q2​

Q=Q1​+Q2​

Q=Q2​−Q1​

Q=Q1​/Q2​

Hess's Law of Constant Heat Summation (or just Hess's Law) states that regardless of the multiple stages or steps of a reaction, the total enthalpy change for the reaction is the sum of all changes.

Q. $A$ reaction proceeds through two paths $I$ and $II$ to convert $X \to Z$ .

What is the correct relationship between $Q$ , $Q_{1}$ and $Q_{2}$ ?

$Q = Q_{1} \times Q_{2}$

$Q = Q_{1} + Q_{2}$

$Q = Q_{2} - Q_{1}$

$Q = Q_{1} / Q_{2}$