<p>what is the pH of a 10^-4 HCl solution
a4
b6
c8
d10</p>
<p>also which indicator is used to study neitralizations of strong acids with weak bases
a phenolphthaelin
b methyl orange
c bromthymol blue
d none of the above</p>
<p>i have a alot more but i dont want to type them all and them not get answered</p>
<p>pH is A. 4</p>
<p>-log(10^-4)</p>
<p>Second one I am not sure.
Maybe it's D. and should be Litmus paper? I dunno.</p>
<p>It's a for the second one.
I'm pretty sure of it.
And you spelt it wrong. It's phenolphth*ale*in. Not phenolphtlaelin.
Also it's neutralizations...</p>
<p>It's either methyl orange or bromothymol blue.</p>
<p>Wrong forum, btw. You should try the High School Life forum . . . there should be lots of chemistry nerds there.</p>
<p>^ It's not phenolphthalein? =O
My teacher lied to me.</p>
<p>I just looked it up, methyl orange looks like the answer.</p>
<p>"Chemists use methyl orange as an indicator in the titration of weak bases with strong acids. It changes from red (at pH 3.1) to orange-yellow (at pH 4.4)"
General</a> Chemistry Online: FAQ: Acids and bases: What is methyl orange? How is it made?</p>
<p>"For strong acids and weak bases methyl orange is the indicator of choice."
IB</a> Chemistry higher level notes: Indicators</p>