Homework Help Forum: Chemistry

Posted by Jared on Monday, July 9, 2007 at 1:12pm.

Subjects Art Business Computers English Foreign Languages Health Home Economics Mathematics Music Physical Education Science Social Studies Features Contribute Download Experts Forum Job Openings Homework Tips Libraries.Jiskha Link to Us Reference School Supplies Search Homework Help Forum: Chemistry Current Questions | Post a New Question | Answer this Question | Further Reading Posted by Jared on Sunday, July 8, 2007 at 1:13am. download mp3 free instrumental remix What is the pH of the solution created by combining 2.50 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? I believe if my calculations are correct the answer is 1.28 however i do not know how to answer this question because it has a weak acid instead of a strong acid What is the pH of the solution created by combining 2.50 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HC2H3O2(aq)? Yes, the 1.28 pH for the first one is correct. The second one forms a buffer. write the equation. NaOH + HC2H3O2 ==> NaC2H3O2 + HOH Calculate mol NaOH initially. Calculate mols HC2H3O2 initially. There will be an excess of HC2H3O2 and there will be some NaC2H3O2 formed. Then use the Henderson-Hasselbalch equation to caluclate the pH of the buffer created. Post your work if you get stuck. What is a variable? What is the definition of model? Why are models useful in chemistry?

• Chemistry - AG, Wednesday, November 12, 2008 at 3:19pm

  CALCULATE THE MOLARITIES OF HC2H3O2 AND NAC2H3O2 IN THE BUFFER SOLUTION

  
  

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