The following reaction occurs in the aqueous phase. What is the net ionic equati
ID: 940847 • Letter: T
Question
The following reaction occurs in the aqueous phase. What is the net ionic equation for the reaction between NaOH(aq) + HF(aq)?
H+(aq) + OH-(aq) --> H2O(l)
Na+(aq) + F-(aq) --> NaF(s)
H+(aq) + F-(aq) + Na+(aq) + OH-(aq) --> H2O(l) + NaF(s)
HF(aq) + Na+(aq) + OH-(aq) --> H2ONaF(s)
HF(aq) + OH-(aq) --> H2O(l) + F-(aq)
a.H+(aq) + OH-(aq) --> H2O(l)
b.Na+(aq) + F-(aq) --> NaF(s)
c.H+(aq) + F-(aq) + Na+(aq) + OH-(aq) --> H2O(l) + NaF(s)
d.HF(aq) + Na+(aq) + OH-(aq) --> H2ONaF(s)
e.HF(aq) + OH-(aq) --> H2O(l) + F-(aq)
Explanation / Answer
first write the balanced equation
NaOH (aq) + HF (aq) --> NaF (aq) + H20 (l)
now
ionic equation should be written
to write that
all the salts , strong acids and bases in aqeous solutions will dissociate into ions
and
solids , liquids and gases, weak acids and bases remain in their initial state
so
the ionic reaction is
Na+ + OH- + HF ---> Na+ + F- + H20
now
cancel ou the common ions
we get
HF + OH- ---> H20 + F-
so
the net ionic equation is
HF (aq) + OH- (aq) ---> H20 (l) + F-
so
the answer is option E
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