Using the following

K_(a)

values, calculate the

pH

values for each of these solutions (using 2 significant figures). [

K_(a)

for acetic acid =

1.78\\\\times 10^(-5);K_(a)

for phosphoric acid

=7.52\\\\times 10^(-3);K_(a)

for

{

[

:H_(2)CO_(3)=4.3\\\\times 10^(-7)]

}\ A. A solution of

0.3M

acetic acid has a

pH

of\ B. A solution of

3M

acetic acid has a

pH

of\ C. A solution of

100mM

phosphoric acid has a

pH

of\ D. A solution of

43mMH_(2)CO_(3)

has a pH of

Using the following Ka values, calculate the pH values for each of these solutions (using 2 significant figures). [ Ka for acetic acid = 1.78105;Ka for phosphoric acid =7.52103;Kaa for H2CO3=4.3107 ] A. A solution of 0.3M acetic acid has a pH of B. A solution of 3M acetic acid has a pH of C. A solution of 100mM phosphoric acid has a pH of D. A solution of 43mMH2CO3 has a pH of