Hello!
A biconditional statement is when one conditional statement and it's converse is true.
A conditional statement is an "If <em>hypothesis</em>, then <em>conclusion</em>" statement.
A converse statement is an "If <em>conclusion</em>, then <em>hypothesis</em>" statement.
Looking at this, both of these statements have their hypothesis and conclusion switched.
Thus, a biconditional statement is a "<em>Hypothesis</em> IFF <em>conclusion</em>." In this statement, IFF means if and only if.
Therefore, when IFF is used in a biconditional statement, it means if and only if.
The acid dissociation constant or Ka is a value used to measure the strength of a specific acid in solution. For a general dissociation of an acid solution,
HA = H+ + A-
we express Ka as follows:
Ka = [H+] [A-] / [HA]
Where the terms represents the concentrations of the acid and the ions. Assuming that the weak acid in the problem is HA, we first calculate for the concentration of H+ from the pH.
pH = - log [H+]
3.25 = - log [H+]
[H+] = 0.0005623 M
By the ICE table, we can calculate the equilibrium concentrations,
HA = H+ + A-
I 0.175 0 0
C -x +x +x
--------------------------------------------------
E .174438 0.0005623 0.0005623
Ka = (0.0005623) (0.0005623) / .174438
Ka = 1.81x10^-6
"<span>Changes of state are physical changes. They occur when matter absorbs or loses energy. Processes in which matter changes between liquid and solid states are freezing and </span>melting<span>. Processes in which matter changes between liquid and gaseous states are vaporization, evaporation, and condensation."</span>
The answer for this question would be B) False or the second option.
Answer is FALSE: ✅
