Answer:
A. Precipitate reaction
Explanation:
The types of reactions are (1) combination or synthesis reactions. (2) decomposition reactions. (3) substitution or single replacement reactions. (4) metathesis or double displacement reactions
<h2><em><u>
Answer - </u></em>b) Be the same as in the second method</h2>
<h3>Brief explanation:</h3>
Enthalpy is an state function that does not depend on the path followed to carry out the reaction but depends upon the initial and final state of system. In above statement both the reaction are same hence the enthalpy change would also be same. This can also be represent in the form of equation,
<h3> ΔHsys = Hf - Hi</h3>
Where,
- ΔHsys is change in enthalpy of system
- Hf is enthalpy of reaction at final state
- Hi is enthalpy of reaction at initial state
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Answer:
Chemical laws are those laws of nature relevant to chemistry. The most fundamental concept in chemistry is the law of conservation of mass, which states that there is no detectable change in the quantity of matter during an ordinary chemical reaction. Modern physics shows that it is actually energy that is conserved, and that energy and mass are related; a concept which becomes important in nuclear chemistry. Conservation of energy leads to the important concepts of equilibrium, thermodynamics, and kinetics.
Explanation:
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