lecture 8

# lecture 8 - So the number of moles are the same in dilute...

This preview shows pages 1–4. Sign up to view the full content.

1 Lecture 8, Oct. 16 Chapter 4. Aqueous Reactions and Solution Stoichiometry (continued) Reading: section 5 & 6

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
2 Examples: 1. Calculate the molar concentration of a solution that contains 2.8g KOH in 250 ml solution. 2. What is the molarity of hydroxide ion in a 0.20M Ba(OH) 2 solution? 3. How would you prepare 250ml of 5.43 M NaCl? 4. What volume of this NaCl solution is needed to supply 10.0 g of NaCl? Dilution Problem: How many mL of concentrated H 2 SO 4 (18.0 M) are required to prepare 200 mL of 1.00 M H 2 SO 4 ? - Adding water to a solution does not change the moles of solute in the solution.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: - So the number of moles are the same in dilute and concentrated solutions. M dilute V dilute = moles = M concentrated V concentrated 3 Solution Stoichiometry Problem: What volume of 0.215M HCl is required to react completely with 0.685 g of Ba(OH) 2 ? Titrations 4 Problem: A 10.00 ml sample of iron(II) sulfate required 18.58 ml of 0.0238 M KMnO 4 to reach the equivalent point. What is the concentration of the FeSO 4 ? The reaction is 10 FeSO 4 + 2 KMnO 4 + 8H 2 SO 4 Æ 5Fe 2 (SO4) 3 + 2MnSO 4 + K 2 SO 4 + 8H 2 O...
View Full Document

## This note was uploaded on 04/07/2008 for the course CHEM 121 taught by Professor Wyzlouzil during the Fall '07 term at Ohio State.

### Page1 / 4

lecture 8 - So the number of moles are the same in dilute...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online