endothermic reaction वाक्य
उदाहरण वाक्य
मोबाइल
- If the net enthalpy change is negative ( ?H net < 0 ), the reaction is exothermic and is more likely to be spontaneous; positive ?H values correspond to endothermic reactions.
- This is because the hydrogen-chlorine bond is strong and thus the second step of the reaction would be extremely slow due to the heat required ( it is an endothermic reaction ).
- I can see how this may be the case where the compound is formed in an exothermic reaction, but it doesn't seem to make sense when formed in an endothermic reaction.
- In contrast, when endothermic reactions occur, energy is absorbed to place an electron in a higher energy state, such that the electron can associate with another atom to form a chemical complex.
- Case ( c ) depicts the potential diagram for an endothermic reaction, in which, according to the postulate, the transition state should more closely resemble that of the intermediate or the product.
- The cooling and fizzing sensation results from the endothermic reaction between sodium carbonate and a weak acid, commonly citric acid, releasing carbon dioxide gas, which occurs when the sherbet is moistened by saliva.
- I'm guessing that it's some long-running endothermic reaction ( which thus sucks in heat ), which is jump-started by heating the chemicals up until the reaction starts.
- The process itself is known to be very interesting, because the injected compound is not foam, until an endothermic reaction in a hot mold activates the blowing agents, resulting in an expanded foam part.
- For unprotected concrete, the sudden endothermic reaction of the hydrates and unbound humidity inside the concrete generates pressure high enough to spall off the concrete, which falls in small pieces on the floor of the tunnel.
- An endothermic reaction like the one inside a chemical cold pack will absorb heat from the environment, but it won't necessarily be dark, nor will it exist in the form of smoke or have a particular density.
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