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REACTION STOICHIOMETRY FACTOR LABEL LOGIC

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REACTION STOICHIOMETRY FACTOR LABEL LOGIC

2 C6H14(g) + 19 O2 (g) 12 CO2(g) + 14 H20(g)

CALCULATE THE YIELD OF WATER IN GRAMS IF 32 GRAMS OF OXYGEN IS CONSUMED IN THE ABOVE BALANCED REACTION.

KNOWN

32.O g O2

( )

( )

( )

OBJECTIVE

13.23g H2O

14mol H2O

=

1 mol O2

18 g H2O

1mol H2O

32 g O2

19 mol O2

CONVERT KNOWN TO MOLES FROM GRAMS, GRAMS CANCEL. MOLAR MASS OF O2 IS 32 G/MOL. GIVES MOLES OF KNOWN.

MOLES = MASS

MOLAR MASS

MOLE RATIO: RATIO MOLES OF OBJECTIVE TO MOLES OF KNOWN., USE COEFFICIENTS OF BALANCED REACTION.

THIS STEP GIVES MOLES OF OBJECTIVE.

CONVERT MOLES OF OBJECTIVE TO GRAMS. THIS STEP GIVES GRAMS OF OBJECTIVE, WHICH THE QUESTION CALLED FOR

REACTION STOICHIOMETRY FACTOR LABEL LOGIC

2 C6H14(g) + 19 O2 (g) 12 CO2(g) + 14 H20(g)

CALCULATE THE YIELD OF CO2 IN GRAMS IF 16. GRAMS OF OXYGEN IS CONSUMED IN THE ABOVE BALANCED REACTION.

KNOWN

16.O g O2

( )

( )

( )

OBJECTIVE

13.89g CO2

12mol CO2

=

1 mol O2

44 gCO2

19 mol O2

1mol CO2

32 g O2

REACTION STOICHIOMETRY FACTOR LABEL LOGIC

2 C6H14(g) + 19 O2 (g) 12 CO2(g) + 14 H20(g)

CALCULATE THE YIELD OF C6H14 IN GRAMS IF 16. GRAMS OF OXYGEN IS CONSUMED IN THE ABOVE BALANCED REACTION.

KNOWN

16.O g O2

( )

( )

( )

OBJECTIVE

4.53g C6H14

=

1 mol O2

2mol C6H14

86 gC6H14

1molC6H14

32 g O2

19 mol O2

REACTION STOICHIOMETRY FACTOR LABEL LOGIC

2 KClO3(s) 3 O2(g) + 2KCl(s)

( )

KNOWN

6 MOLES

O2

OBJECTIVE

4 MOL KClO3

2 MOLES KClO3

=

3MOLES O2

( )

( )

KNOWN

0.5 C2 H2 mol

OBJECTIVE

40 g O2

5 mol O2

=

32g O2

1mol O2

2 mol C2H2

MOLE RATIO: RATIO MOLES OF OBJECTIVE TO MOLES OF KNOWN., USE COEFFICIENTS OF BALANCED REACTION.

THIS STEP GIVES MOLES OF OBJECTIVE.

CONVERT MOLES OF OBJECTIVE TO GRAMS. THIS STEP GIVES GRAMS OF OBJECTIVE, WHICH THE QUESTION CALLED FOR

KNOWN

32.O g Cu

( )

( )

( )

OBJECTIVE

18 g H2O

2mol H2O

=

1 mol Cu

18 g H2O

1mol H2O

64 g Cu

1 mol Cu

CONVERT KNOWN TO MOLES FROM GRAMS, GRAMS CANCEL. MOLAR MASS OF Cu IS 64 G/MOL. GIVES MOLES OF KNOWN.

MOLES = MASS

MOLAR MASS

MOLE RATIO: RATIO MOLES OF OBJECTIVE TO MOLES OF KNOWN., USE COEFFICIENTS OF BALANCED REACTION.

THIS STEP GIVES MOLES OF OBJECTIVE.

CONVERT MOLES OF OBJECTIVE TO GRAMS. THIS STEP GIVES GRAMS OF OBJECTIVE, WHICH THE QUESTION CALLED FOR

4 mol H2O

1 mol C3H8

KNOWN

22 g C3H8

( )

( )

( )

OBJECTIVE

36g H2O

=

1mol C3H8

18 g H2O

44 g C3H8

1mol H2O

CONVERT KNOWN TO MOLES FROM GRAMS, GRAMS CANCEL. MOLAR MASS IS 44 g/MOL. GIVES MOLES OF KNOWN.

MOLES = MASS

MOLAR MASS

MOLE RATIO: RATIO MOLES OF OBJECTIVE TO MOLES OF KNOWN., USE COEFFICIENTS OF BALANCED REACTION.

THIS STEP GIVES MOLES OF OBJECTIVE.