Answer:
Instead, pour a small amount into a beaker or clean weigh dish. Once you have added a chemical to a container, label it promptly. When you are finished with the experiment, dispose of the excess chemical as chemical waste. Do not simply pour the excess chemical down the sink.
Answer: <span>Ethanoic acid (CH3COOH)
Reason:
Chemical property of substance depends upon the functional group associated with the system. Compound with same functional group will have similar chemical properties.
In present case, </span>propanoic acid has an acidic functional group (-COOH). Also, ethanoic acid has an acidic functional group (-COOH).
On the other hand, propanal and1-propanol have aldehydic (-CHO) and alcoholic (-OH) functional group. <span>Propane is a pure alkane and will have minimum chemical reactivity.
Due to this, propanoic acid will have chemical properties similar to ethanoic acid. </span>
Answer:
A. Kinetic energies of molecules increase.
B. Speeds of molecules increase.
C. Number of collisions per second increase.
Answer:
–36 KJ.
Explanation:
The equation for the reaction is given below:
2B + C —› D + E. ΔH = – 24 KJ
From the equation above,
1 mole of D required – 24 KJ of energy.
Now, we shall determine the energy change associated with 1.5 moles of D.
This can be obtained as illustrated below:
From the equation above,
1 mole of D required – 24 KJ of energy
Therefore,
1.5 moles of D will require = 1.5 × – 24 = –36 KJ.
Therefore, –36 KJ of energy is associated with 1.5 moles of D.