Answer:
condensed matter should be your answer
Explanation:
Answer:
A. Hot water increases the collision rate of the molecules, causing the
reaction to occur faster.
Explanation:
Hot water molecules move faster than cold water molecules.
Answer:
The periodic table has gone through many changes since Dmitri Mendeleev drew up its original design in 1869, yet both the first table and the modern periodic table are important for the same reason: The periodic table organizes elements according to similar properties so you can tell the characteristics of an element just by looking at its location on the table
Explanation:
hope it helps you
Answer:
pKa = - 1.36012
Explanation:
∴ Ka = [H+] [A-] / [HA]
- % dissociates (%α) = ([A-] / [A-] + [HA])×100
∴ %α = 99.1%
∴ <em>C</em> HA = 0.21 M
Mass Balance:
⇒ <em>C </em>HA = [HA] + [A-] = 0.21 M............(1)
Charge balance:
⇒ [H+] = [A-] + [OH-].....[OH-] is neglected, it come from the water
⇒ [H+] = [A-]...............(2)
(2) in (1):
⇒ [HA] = 0.21 - [H+]
replacing in %α:
∴ %α = 99.1% = ([A-]/([A-]+[HA]))×100
⇒ 0.991 = [A-] / [A-] + [HA] = [A-] / 0.21 M
⇒ [A-] = (0.21 M)*(0.991) = 0.20811 M
Replacing in Ka:
⇒ Ka = [H+]² / (0.21 - [H+])
∴ [H+] = [A-] = 0.20811 M
⇒ Ka = (0.20811)² / (0.21 - 0.20811)
⇒ Ka = 22.9152
⇒ pKa = - Log (22.9152)
⇒ pKa = - 1.3601
Answer:
Approximately 
.
Assumption: the density of the solution is equal to the density of pure water.
Explanation:
The enthalpy of neutralization is defined as the enthalpy change for each moles of water produced. (Clark, Physical & Theoretical Chemistry, Chemistry Libretexts.)
Each mole of 
formula units will neutralize one mole of 
to produce one mole of water. and are available at equal volume and concentration. In other words, there's an equal number of both reactants. All and will react to form water.
.
.
.
In other words, there are 
of and each. The two will react to produce of water.
How much heat is released?
Assume that the volume of the liquid is equal to the volume of the solution plus the volume of the solution. That's 
. Assume that the density of the solution is equal to that of water under room temperature. 
. The mass of the liquid will be 
.
Change in temperature:
.
Heat that the solution absorbed:
.
That will also be the amount of heat released from the reaction if there's no energy loss.
.
