QUIZ #6, CHEM 001  (Chapters 8 and 9)  

Name: _________________________   Date: ____________  

Please note that you may need to balance the chemical equations given in the  question(s) below before attempting to answer the question(s). You must show all work  to receive any credit; and, where applicable, report all numerical answers to the proper number  of significant figures.  

1 . How many grams of PCl 5 would be required to produce 37.9 g of HCl? [5 pts.]   

PCl 5 + H 2 O ⎯→    POCl 3 + HCl   

       2. How many grams of H 2 O will be produced from the neutralization of 26.35 g of  

NaOH in the presence of 12.50 g of H 2 SO 4 , and the reaction yield is 91.0%? (20  pts.)  

 NaOH +   H 2 SO 4   ⎯→    H 2 O +   Na 2 SO 4  

  

 

    

 

ANSWER HEY

2

37.9g Ha . ÷:hiiixd:iiixY::i÷:c.

-1108Gt

STEP I : 2 2BALANCE

STEP 2 :

26.35g NaOH xlIo°!oNm:afH×ZmdH2O- =

0.6588not H2O

FIND LIMITING 2 mot NaOHREACTANT

iz.sogltzsoyxlgmd.o.IT#oyx2:YfII

,

=oz549mo

Hzsoy limits

STEEL.

Grams 0.2549 mol Had xt8.fm#ytO--4.593gHz0OF PRODUCT

" "

affix % YIELD 4.593g

Had x 0.91 = 4.l8g

QUIZ #6, CHEM 001  (Chapters 8 and 9)  

Name: _________________________   Date: ____________  

Please note that you may need to balance the chemical equations given in the  question(s) below before attempting to answer the question(s). You must show all work  to receive any credit; and, where applicable, report all numerical answers to the proper number  of significant figures.  

1 . How many grams of H 2 would be required to produce 27.3 g of NH 3 ? [5 pts.]   

H 2 + N 2 ⎯→ NH 3    

       2. How many grams of Al 2 O 3 will be produced from the oxidation of 18.15g of Al in  

the presence of 42.00g of Fe 2 O 3 , and the reaction yield is 80.0%? (20 pts.)   

Al + Fe 2 O 3 ⎯→ Al 2 O 3 +   Fe   

  

    

 

ANSWER HEY

3 2

27.3g NHS × ¥15"

guy ,

× szmm.it#x2Ym?ffHi--/4.85gHsI

STEP I : 2 2BALANCE

steps : 18.15g At × lznf.dgqttg-xlrzndm.FI#f3-xlOlom9of9r--- 34.30gFIND LIMITING A 1203REACTANT

te¥:÷×'I::¥÷×Yh÷- 26 ,glimiting

STEP 3 :

FIND GRAMS26 .81g

OF PRODUCT A 1203

STEP 4 :

APPLY Yo YIELD

26.81g× (

0.800)

=2tay④

QUIZ #6, CHEM 001  (Chapters 8 and 9)  

Name: _________________________   Date: ____________  

Please note that you may need to balance the chemical equations given in the  question(s) below before attempting to answer the question(s). You must show all work  to receive any credit; and, where applicable, report all numerical answers to the proper number  of significant figures.  

1 . How many grams of HF would be required to produce 37.9 g of SiF 4 ? [5 pts.]   

HF + SiO 2   ⎯→ SiF 4   +   H 2 O   

       2. How many grams of CO 2 will be produced if 32.00 g of O 2 is reacted with 16.05 g  

of C 4 H 10 ? Assume the reaction yield is 85.0%. [20 pts.]   

C 4 H 10   +   O 2 ⎯→ CO 2 + H 2 O   

  

    

 

ANSWER KEY

4 2

37.9g Sify x

,xih.is?EIxYm9YffI--/29.lgunsHFI

13 8 10STEP I : Z

43.5 4) &BALANCE

STEP 2 :

32.00g Oz × ×8mi =

0.6154mi

" mint

FIND LIMITING 32.00g 13 hut OLREACTANT

16.05g Cy Hyo x4t"x 8moI

= 1.104 mot Coz58.14g Catto 2nd CYHIO

STEP 3 :

FINE,IF 0.6154 not Coe x 4YI.fr#--27.O8gCaQ

STEP 4 :

APPLY to YIELD

27.000×0.85 = 23oOg