Module 5 Mole Concept in Chemical Equation

8/18/2019 Module 5 Mole Concept in Chemical Equation

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JOM KIMIA A+

SMK DATO’ BENTARA LUAR BATU PAHAT

Name: ………………………………………. Class: …………………..Date : ………………….

MODULE 5: Mole Concept In Chemical Equation

Molar mass;1 mole of substances = Ar or M r in gram

Number of mole =

Molar volume:1 mole of gas = 22.4 dm3 (in s.t.p) or 24. dm3 (in room condition)

Number of mole =

The relation is;

MoleVolume

of gasMass of

substances

× Molar mass

: Molar mass

× Molar volume

: Molar volume

Number of

particles

: NA

× NA

1

Ar or Mr

Mass

.! "m# $ !.% "m#

&olume of 'as


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Exercise: Answer all question : -

(. CuC)# Cu) * C)

In this reaction+ #.( ' of copper,II- carbonate are heate" in a laborator. /in" :(a) the mass of copper ,II- o0i"e that bein' pro"uce".

(b) the 1olume of carbon "io0i"e 'as pro"uce" at s.t.p23elati1e atomic mass: Cu+ 4!; )+ (4; C+ (; Molar &olume is .! "m# at s.t.p5

. CaC)# Ca) * C)

In this reaction balas+ #%% cm# 'as carbon "io0i"e are pro"uce" 6hen calciumcarbonate are heate". /in":

(a) the mass of calcium carbonate use".(b) mass of calcium o0i"e pro"uce".

23elati1e atomic mass: Ca+ !%; )+ (4; C+ (;5

#. Na * 7) Na)7 * 7

8hen %.# ' of so"ium is a""e" to 6ater+ the metal 6ill react 1i'orousl at thesurface of the 6ater+ fin"

(a) the mass so"ium h"ro0i"e pro"uce".

(b) 1olume of h"ro'en 'asses an' bein' pro"uce" at temperature room.23elati1e atomic mass: Na+ #; )+ (4; 7+ (; Molar &olume is ! "m# at roomtemperature5

2


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!. M' * ) M')

A strip of ma'nesium has a 6ei'ht of (. ' are bein' burn 6ith surplus o0'en topro"uce" ma'nesium o0i"e. /in":,a- the mass ma'nesium o0i"e bein' pro"uce".,b- the mass of o0'en that nee"e" for this reaction.

23elati1e atomic mass: M'+ !; )+ (45

9. C#7 * 9) #C) * !7)

ropane 'as 6as burne" in o0'en follo6 as equation abo1e. If #.#4 "m# of carbon"io0i"e 'as are pro"uce" in this reaction at s.t.p+ fin",a- the mass of propane burne"(b) 1olume of o0'en 'as that reacte"

23elati1e atomic mass: 7+ (; C+ (; Molar &olume is .! "m# at s.t.p5

4. Al * #Cu) Al)# * #Cu

(.#9' of aluminium po6"er an" copper ,II- o0i"e 6as heate" stron'l in laboratorto pro"uce" aluminium o0i"e an" copper. /in",a- the mass of copper ,II- o0i"e reacte"

,b- the mass of aluminium o0i"e pro"uce".,c- the mass of copper pro"uce".23elati1e atomic mass: Cu+ 4!; Al+


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(%. N)# N) * )9.%9 ' of potassium nitrate 6as heate" stron'l to pro"uce potassium nitrite an"o0'en 'as at stan"ar" temperature. /in":,a- Mass of potassium nitrite pro"uce",b- &olume of o0'en pro"uce"

23elati1e atomic mass: + #>; N+ (!; )+ (4; Molar &olume is .! "m# at stan"ar"temperature5

((. b,N)#- b) * !N) * )


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( Al * 47Cl AlCl# * #7#.! ' of aluminum po6"er are a""e" to h"rochloric aci" in a conical flas?. Thereaction release" a h"ro'en 'as an" pro"uce" a aluminum chlori"e solution./in":,a- Mass of h"rochloric aci" reacts 6ith aluminum

,b- Mass of aluminum chlori"e pro"uce",c- &olume of h"ro'en 'as release" at room temperature23elati1e atomic mass: Al+


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AN8E3 M)DBE 9: M)E C)NCET IN C7EMICA EBATI)N

(. ,a- ',b- %.94 "m#

. ,a- (.9 '

,b- %.< '

#. ,a- %.!',b- %.( "m#

!. ,a- ',b- %. '

9. ,a- . ',b- 9.4 "m#

4. ,a- 4 ',b- .99 ',c- !. '

94 "m#

,c- %.!4! "m#

(.,a- (#.(! ',b- (4.% '

,c- !.# "m#

(#.,a- 4.4< ',b- 9 ',c- !.4< "m#

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Module 5 Mole Concept in Chemical Equation

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