Posted by Hannah on Monday, April 9, 2012 at 10:51pm.
If you add 0.35grams NaF to 150mL of a 0.30M HF, what is the pH of the resulting solution?
To start off would I use the value of 1.4e11 for F^^ and 7.2e4 for HF?

Chemistry(Please help)  DrBob222, Tuesday, April 10, 2012 at 12:04am
This is a buffer problem.
pH = pKa + log(base)/(acid)
Use Ka for HF
Convert g NaF in 150 mL to M, then lug in the numbers.

Chemistry(Please help)  Hannah, Tuesday, April 10, 2012 at 10:39am
So it would be pH=4.74 + log base/acid and I use 7.2e4 for HF but after I convert g NaF in 150mL to M is this what I use for the base?
Answer This Question
Related Questions
 Chemistry  If you add 0.35grams NaF to 150mL of a 0.30M HF, what is the pH of ...
 college chemistry  what is the molarity of NaF in the final solution if a ...
 ChemB  CALCULATE PH OF THE SOLUTION THAT RESULTS FROM EACH SOLUTION A) 150.0mL ...
 chemistry  Given a saturated solution of CaF2, write the ionic equilibrium and ...
 chemistry  A 150mL sample of 0.45 M HNO3 is diluted to 450 mL. What is the ...
 Chemistry  A student mixed 15.0 mL of a solution of 0.0200 M ferric chloride ...
 Chemistry  An unknown salt is either NaF, NaCl or NaOCl when 0.050 moles of the...
 Chemisty  The solubility of sodium floride, NaF, is 4.06 g NaF/100 g H2O at 20ยบ...
 chemistry  1)100ml sample of solution that is 0.2m in both Naf and Hf has 4.0 ...
 COMPUTERSEXCEL 2007  which one of the following formulas accurately describes ...
More Related Questions