wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

For an endothermic reaction, ΔH is__.

A
+ve
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
-ve
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
0
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
none
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A +ve
Endothermic reactions are the chemical reactions which proceed with the absorption of heat energy.
Consider the reaction A+B+qC+D.
Here, q is the heat energy absorbed during this exothermic reaction.
The enthalpy change for this reaction is ΔHrxn=HproductsHreactants=+q
Positive sign indicates that heat is absorbed in the reaction.
Hence, Hreactants+q=Hproducts
Thus, in an endothermic reaction, the total enthalpy of reactant is smaller than that of products.
Hence, for an endothermic reaction, H is positive.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Enthalpy
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon