Answer:
A system is in equilibrium when the rate of the forward reaction is equal to the rate of the reverse reaction.
Explanation:
In a system in equilibrium, the rupture and formation of new bonds from the formation and decomposition of substances must have the same reaction rate. Thanks to equal speeds we can say that a system in equilibrium is dynamic and in general every system tends to move spontaneously towards equilibrium. The environment never interferes.
For example.
N2 (g) + 3H2 (g) ---> 2NH3 (g) formation
2NH3 ----> N2 (g) + 3H2 (g) decomposition
N2 (g) + 3H2 (g) <------> 2NH3 (g) In equilibrium
Answer:
The flask would probably feel cooler than before the reaction started.
Reasoning:
Endothermic is a process or reaction accompanied by or requiring the absorption of heat
Answer:
263.9g
Explanation
Total mass of solution= mass of solute + mass of solvent = 13.9+250g =263.9g
Mass of surrounding= mass of calorimeter= 263.9g
