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Balance Equations and Predict Reactions Worksheet Key, Exercises of Chemistry

Many practice problems on chemical reactions asking to balance equations as well as predict reactions based on reactants. Answer key is included in this worksheet

Typology: Exercises

2020/2021

Uploaded on 04/20/2021

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Download Balance Equations and Predict Reactions Worksheet Key and more Exercises Chemistry in PDF only on Docsity!

Name�KJ�P�tl..__________

Reaction Prediction Date __-:i_______

-{rO<"cle.� -ones o.-e �Mp\e� �ou �on lf- nud +o bf a.k>te t-o do

-I<

In each of the following examples: (a) State what type of reaction is expected. (b) Tell whether the reaction will occur or not, and why. (e) Write the balanced equation for those reactions that do take piace; write the symbols and formulas of the reactants for those reactions that do occur.

X Indicate whether double replacement reactions are reversible o; irreversible.

SR^ 1. aluminum plus hydrochloric acid 21\ay,l-\C�� zAICficog;3"1u3) 'De,_ 2. calcium hydroxi& plus nitric acid (^11)

/;")^ Co. (o H),. (Cli)^ ..,^ 2.-l^ NO^ ?,e�^ Co. (N01h-tt!^ Z^ r,O"<..e>

S. .:;,I aluminum plus"magnesium.^ O'^ O'

A\ -+ t-"� ➔ NR

SR 4. magnesium plus zinc nitrate

M 'àn�^ Zn[NO�)"C•V^ �j(N01),_^ ca'L) +^ z,,,^ s)

S 5.^ mercury plus oxygen

2�t 0¼9)-.,^ ZHqOc�)

t>R 6.^ zinc chlonde plus hydrogeYi sulfìde °b"LllfQ� .h.�,.; 'Zn s,�)-+ 2H c,(°1)) S 7. dinitrogen pentoxide plus water N2.Os +^ \·h_O� 2HND! � 8.^ silver chloride plus sodium nitrate �q -+^ ��N0 3 �^ �tJl>l^ ➔ No.a^ � does"'+ "�.\l, o� _blc �e.I ;s So ,d 1:) 9.^ sodium chlorate (heated) 2."1�00� � 2. tJ"'c.t "''\02.

� 1 O.^ barium nitrate plus sodium chromate 1òo.(N0,) 1 ... No.1.u-Oq �^ {¼u-Oq � 2.NQ.N

�11. sodium bromide plus silver nitrate No.�v- � ��e��N01 .. �Br

  1. calcium phosphate plus aluminum sulfate � C.O.;(P0�1. ..^ l'1..^ (SoCV^3 � 3(oS
  • 2 A\ PO'f
  1. zinc carbonate (heated) t> (^) ZnCD1» -., -Z.nO -+ (1)1...
  2. mercury(I) sulfate plus ammonium nitrate

N

� -\�i.^ ço�^ +^ 1-J""^ N� ➔^ (w�'I)�<;oli^ --1^ \'l^ o^^3

45

(continued) @ Chemistry Problems

Reaction Prediction (continued)

Name ___________ Date ____________

5 15. potassium plus fluorine 2.1< + F2 _., 2(F

t)(l16.^. potassium nitrate plus zinc �<NO �hospha�e !, -+^ Ùl�[PO&t)2. ➔^ K?t?Oc.\ -t-:,z.V(ND�z. S 17. lithium oxide plus water Liz. O ➔ .h.O 2.Ll o t> 18. sodium chloride (electrolyzed) 'Z.fl.Jo.C.1 ➔ 2--No- + e '1.. S @^ silver plus barium A<3 -t Be>..➔ Ntt.

  1. iron(III) hydroxide plus phosphoric acid (^11) 1>'2-^ C^ -' te- ( ott)� -t \·h. P°'-t -:>^ 'fe.t

(^) o LI "" 3 n

  1. sodium plus nitric acid 1:,(1.. (^) -i.No..+ 2,\NO!> 4 2.w�tJ<h -t- -H
  2. iron(III) iodide plus cupric nitrate c.upri c. :: c1>pper (11)

�(t. 2fe:!� +$(.�(NO�-'> z.re(ND�'^ -t^ 3C1.t:C2.

  1. copper plus sulfuric acid c;(l. ù" +^ \·b..^ SDq^ ^ f'J 12..
  2. lead plus potassium chlorate 51L. (^) 'Pb-+ KC.\01, -.::, N�
  3. sulfur dioxide plus water

S SOi. -t 1--�o -> -hSO:!i.

@ oxygen plus sulfur s.^ - o·�+ s � �c.,-..

  1. sodium sulfate plus barium chloride "Dq.. (^). NG\ '2. so� -+ Ba.Cb. � 1?> o. SO 4 + ztJo.. C. I
  2. ammonium phosphate plus lithium hydroxide bq.. (^) (N-\l)�rol.\ + 3uO-\ � �N-\q()� -t W'3PO�
  3. hydrogen plus oxygen s (^) 2-\ (^) 'I.-- + o� 2-h.O
  4. mercury plus nitric acid s. t2- (^) -\� _.. -\ N 03l-l�
  5. sodium oxide plus water s (^) No..,O -tt-\1.O -==, 21'-.lo.O.\
  6. calcium carbonate plus lithium chloride

t>� Co..C03+2L.:,C\ � Co.C..l l, .... Uf-

(continued) @ Chemistry Problems

)

Reaction Prediction (continued)

Name ___________ Date ___________

  1. potassium hydroxide plus hydrosulfuric acid

bR 2 KO\ -+ " ,. � � K2.� ... 2Hol-\

  1. sodium carbonate plus sulfuric acid •l·h.l,b1 �o.J::.� into �ho +(i).,_

UR N().."2-(0i -4- H,�'f -, N�,Sb 4.,. \·h.O^ +^ Co).

  1. barium sulfate plus calcium chloride t>'1- �o So� + C.o..C.l -a.�e,� .,. Cb.SD (^) c.,
  2. silver plus mercury(I) nitrate s� (^) f\� + -\�NO� ➔ NR
  3. barium carbonate (heated) b Bo.C0 1&,_O+ (.OL
  4. lithium plus bromine S ZU + � ...� � 2.LiP-,r
  5. sodium chloride plus potassium chromate t:,e.. 2.NoC I � Ki.C.r 04 _:,, No.�u04 -t '2.. (C: 1
  6. potassium sulfide plus iron(II) nitrate t)(Z.. ('2, e; -+ Fe (NO�)'l. -., 2.KNO�^ 't^ Fc. S
  7. iodine plus ammonium fluoride �9.- "I.� -+ N-\ (^) '1 F ➔ N�

@) sodium plus calcium

s Nq..+ Co..� Nft

  1. aluminum chloride (electrolyzed)

1> zJ\ \C\ :!. -:io, 2A l -+ 3 C\2.

  1. lead(II) chlorate plus sodium sulfide � 'Pb^ (C.103)-i.^ +^ No.^ i.^ S -"^ 'Pb �^ -t.^ l.N°'CIO)
  2. sulfur trioxide plus water .S (^) so�--1..0 -'!I> -h.SOq
  3. calcium carbonate plus hydrochloric acid �(t. (^) to.tol + 2 �Cl � Co.Cli -+ f-110 .. COi,
  4. iron plus sodium bromide

se.. te 1- No.Br 4 NR

  1. ammonium acetate plus iron(II) chloride

t>Q. 2 N\"la.HlO� + Fect� � 2N\qCI + Fe(C2.H10 ..),

  1. silver bromide plus ammonium sulfate

bo. A�'òr^ +^ (N-\q)'l-^ ^ "f^ ➔^ *A�,so'*^ +^ NHqSr^ •doesr,'-1- veCl..11'1 �appen

  1. zinc plus sulfuric acid St- 'Z."'""' �� _<;cl.\ ., (^) z."�'f t' H t (continued)^ @ 48 Chemistry Problems

Reaction Prediction (continued)

@. neon plus potassium � Ne- -t �^4 Nit @ (^) iron plus potassium iodide �� Fe 4- KINl

  1. lead(II) hydroxide plus hydrochloric acid

btt.. V'o lo�ì� -\1.-\C.\ ➔ 'Pbt\1. � l"C>"'

  1. iron plus sulfur s fe -t � _,, fc.S
  2. potassium chlorate (heated) l) 1.KC\01. 4 l.KCl -t- Q oxygen plus chlorine ..s Z.02. + Cl2.2.CI0 2

Name ___________ Date ___________

  1. silver iodide plus iron(III) sulfìde tR <r,A^^1 ..^ Fei. S 3 ➔3A�'1-$ -..1FeJ: �^ ""dotsn'+ nc.+ua.H'i ho.ppen
  2. iron�I) carbonate plus phosphoric acid

t>tL 3feC.0!, + 2�) l'b^4 �^ �3lf'D�2.^ 1-^ 3\·h.O^ -+ 3Cb1.

  1. potassium iodide plus ammonium nitrate t>� KI. .,. N� NO!a ➔ k.NO� -t NW� I:
  2. potassium plus sodium nitrate (heated) SIL (^) (. +. Na t>JlJ� -!> \QJ0.1 + ��
  3. bromine plus sodium chloride Sft. Sra. ➔ N� C..I � NR
  4. silver sulfide plus hydrochloric acid t)� (^) � 1,<;^ +^ z�c1^ ➔^ 2.Asc,^ � "�s
  5. m;��esium nitrate plus hydrochloric acid

b<2- ��(tJD��Z\CI ➔ f,.,{�Cli.. +^ 2-\ND�

@ ammonia plus hydrogen chloride *� N\3 + ,IC*NHyCI

  1. zinc hydroxide plus sulfuric acid *� 2Y* lotth + "1.�o"I ➔ "'2."' S°'-\ -+ 2.\0"
  2. calcium o:xide plus water s Co.O ➔ \h...O ➔ CQ.(OH)"'-
  3. sodium plus chlorine � 2N" -+ c.11- _, 2No..t \
  4. calcium hydroxide (heated)

t> Co. ( D�)l ➔ 0AO -t \

(continued) @ Chemistry Problems