Explanation:
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Answer:
a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
<h3>What is pH?</h3>
This is defined as the degree of acidity or alkalinity of a substance and pH from 1.0 - 6.9 is acidic, 7 is neutral while 7.1 - 14.0 is basic.
The aqueous solutions and their appropriate pH can be seen above which is the right choice.
Read more about pH here brainly.com/question/22390063
Endothermic is the absorption of heat, so Burning in most likely the answer.