What happens during a chemical reaction?
2 answers:
Answer: Option (a) is the correct answer.
Explanation:
A chemical reaction is defined as the reaction in which exchange of electrons take place between reactant molecules due to which bonds between reactant molecules are broken down.
This leads to the formation of new compounds known as products which occur due to formation of bonds.
For example,
Here, bonds between HCl and NaOH are broken down and formation of NaCl and occur due to new bond formation.
Thus, we can conclude that during a chemical reaction the 'reactants' bonds break, and bonds of the products form.
You might be interested in
Answer:
Explanation:
Hello!
In this case, since it is observed that hot cadmium is placed in cold water, we can infer that the heat released due to the cooling of cadmium is gained by the water and therefore we can write:
Thus, we insert mass, specific heat and temperatures to obtain:
In such a way, since the specific heat of cadmium and water are respectively 0.232 and 4.184 J/(g °C), we can solve for the equilibrium temperature (the final one) as shown below:
Now, we plug in to obtain:
NOTE: since the density of water is 1g/cc, we infer that 25.00 cc equals 25.00 g.
Best regards!