lecture10

# lecture10 - Lecture 10 Lecture 10 Limiting Reactants...

This preview shows pages 1–5. Sign up to view the full content.

1 Lecture 10: Limiting Reactants; Combustion Analysis 2 Reactions with Reactant in Limited Supply Given 10 slices of cheese and 14 slices of bread. How many sandwiches can you make? Balanced equation 1 cheese + 2 bread 1 sandwich 1 cheese 2 bread 1 cheese 1 sandwich 2 bread 1 sandwich

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

View Full Document
5 base all other calculations on the limiting reactant. Bread is limiting Sandwiches made Sandwiches made 14 bread (1 sandwich / 2 bread ) = 7 sandwiches Cheese remaining Cheese remaining 14 bread (1 cheese / 2 bread ) = 7 cheese used. Started with 10 cheese. Cheese remaining 10 – 7 = 3 slices Reactions with Limited Reactants 6 How much water will be produced by the combustion of 25.0 g of H 2 in the presence of 100. g of O 2 ? Write a balanced equation: n H2 = 25.0 g = 12.40 mol H 2 1 mol H 2 2.016 g 2 H 2 (g) + O 2 (g) 2 H 2 O( l ) n O2 = 100. g = 3.125 mol O 2 1 mol O 2 32.00 g Reactions with Limited Reactants

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

View Full Document
7 2 H 2 + O 2 2 H 2 O Moles available: 12.40 3.125 Using H 2 12.40 mol H 2 (2H 2 O /2H 2 ) = 12.40 mol H 2 O Using O 2 3.125 mol O 2 (2 H 2 O/1 O 2 ) = 6.250 mol H 2 O O 2 gave less water. O 2 is limiting is limiting .
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 11/18/2011 for the course CHE 131 taught by Professor Kerber during the Spring '08 term at SUNY Stony Brook.

### Page1 / 13

lecture10 - Lecture 10 Lecture 10 Limiting Reactants...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online