The balanced chemical equation for reaction of and is as follows:
From the balanced chemical equation, 2 mol of reacts with 1 mol of .
First calculating number of moles of as follows:
On rearranging,
Here, M is molarity and V is volume. The molarity of is given 0.274 M or mol/L and volume 155 mL, putting the values,
Since, 1 mol of reacts with 2 mol of thus, number of moles of will be .
Now, molarity of is given 0.305 M or mol/L thus, volume can be calculated as follows:
Therefore, volume of is 278.5 mL.
Answer:
Explanation:
Catalysts lower activation energy. TRUE.
They provide an alternate pathway with a lower activation energy.
Catalysts are consumed by the overall reaction. FALSE.
They take part in the reaction, but they can be recovered unchanged at the end.
Catalysts speed up the chemical reactions. TRUE.
If the activation energy is lowered, a greater percentage of the molecules will have enough energy to get over the energy barrier.
Its like lowering the high-bar in a track and field meet. The lower the bar, the more athletes will be able to get over it.
If you place a dialysis tubing permeable only to water filled with 10% sucrose solution into a beaker filled with a 30% solution of sucrose, you would expect for the water molecules from the 10% solution to pass through the membrane and dilute the 30% solution until the concentration in both solutions are equal. Thus, in equilibrium.
Answer:
A.) 2.0 M
Explanation:
Molarity=mole of solutes/Liters of solution so M=mol/L
2moles/4 L =2 M