Homework Help: science

Posted by Jack on Friday, January 22, 2010 at 4:06pm.

I added 40 mL of NaOH 1N to rise the pH of 10g teriphitalic acid from 5.3 to 6.3, so if I adde the same 40 mL of NaOH to 12g of the same acid what is the new pH will I have?

science - bobpursley, Friday, January 22, 2010 at 4:16pm
Wouldn't that be the same as adding 2 grams of acid to the original solution?

so you add 1/5 more acid (2/10), you ought to change lets see...
1/5 (H change)=1/5(10^-5.3 - 10^-6.3)
= 1/5(5E-6 - .05E-6)=1/5 (4.5E-6)
= 0.9E-6 hydrogen concentration change, it goes more acid to...

Hconc= 10^-6.3+.9E-6=1.4E-6
pH final= 5.85
check my work

Answer this Question

Related Questions

Chemistry - A 50.0 mL sample of 0.12 M formic acid, HCOOH, a weak monoprotic ...
College Chemistry - A 30.00 mL volume of a weak acid, HA, (Ka = 3.8 x 10^-6) is ...
AP Chemistry - help with acid/bases If the pH at 50.0 mL of NaOH added is 4.0 ...
chemisry - A 0.1 molal solution of a weak monoprotic acid was found to depress ...
chemistry - a. A 0.1 molal solution of a weak monoprotic acid was found to ...
Chemistry - 44.70 ml of 0.100 M NaOH are required to completely neutralize 50.00...
please help analytical chemistry - 50 ml of a .1103M solution of formic acid is ...
chemistry - 50 ml of a .1103M solution of formic acid is titrated with a .2511M ...
Chemistry - I took 25 mL of an unknown weak acid and added it to 10 mL of NaOH ...
chemistry - if the pH of a half-neutralized acid solution is 5.4, how would you ...

For Further Reading

First Name:
School Subject:
Answer: