Assignment 2.docx

7/21/2019 Assignment 2.docx

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Reza Syandika

1206240013

Assignment 2P R A C T I C E T E S T

1. Balance the following equation:

N3 ! 1."#$2 → N$2 ! 1.#2$

%he &alanced equation 'how' that 1.00 (ole of N3 )equi)e' *** (ole+', of $2.

a, 0.#" c, 1.33

&, 1.2# d, 1."#

2. -)ite a &alanced equation fo) the co(&u'tion of acetaldehyde /3/$.

/3/$ ! 2.#$2

2/$2 ! 22$

-hen )oe)ly &alanced the equation indicate' that *** (ole+', of $2 a)e )equi)ed fo)

each (ole of /3/$.

a, 1 c, 2.#

&, 2 d, 3

3. Balance the following equation with the SS% -$ N5BR

/$7/7N%S o''i&le. Select the nu(&e) that i' the 'u( of the coefficient' in the

&alanced equation:

28/l$3 → 28/l ! 3$2a, # &, 6 c, " d, 9

4. -)ite a &alanced equation fo) the co(&u'tion of )oane /39.

/39 ! #$2 3/$2 ! 42$

-hen )oe)ly &alanced the equation indicate' that *** (ole' of $2 a)e )equi)ed fo)

each (ole of /39.

a, 3 &, 3.# c, # d, 9

#. -hat i' the total (a'' of )oduct' fo)(ed when 16 g)a(' of /4 i' &u)ned with ece''

oygen;

a, 90 g c, 36 g

&, 44 g d, 32 g

6. /alculate the (a'' of hyd)ogen fo)(ed when 2# g of alu(inu( )eact' with ece''

hyd)ochlo)ic acid.

2l ! 6/l→ 2 l/l3 ! 3 2

a, 0.41 g c, 1.2 g

&, 0.<2 g d, 2.9 g



". ow (any g)a(' of the (ied oide e3$4 a)e fo)(ed when 6.00 g of $2 )eact

with e acco)ding to

3e ! 2$

2

→ e

3

$

4a, 43.4 c, 1"4

&, 96.9 d, 21."

9. o) the )eaction:

2n$2 ! 48$ ! $2 ! /l2 →

28n$4 ! 28/l ! 22$

the)e i' 100. g of each )eactant a=aila&le. -hich )eagent i' the li(iting )eagent;

>ola) a''e': n$2?96.<@ 8$?#6.1@ $2?32.0@ /l2?"0.<A

a, n$2 c, $2

&, 8$ d, /l2

<. ow (any g)a(' of nit)ic acid N$3 can &e )ea)ed f)o( the )eaction of <2.0 g of

N$2 with 36.0 g 2$;

3N$2 ! 2$→ 2N$3 ! N$

a, 64 c, 94

&, "6 d, 116

10. %he )eaction of 2#.0 g &enzene /66 with ece'' N$3 )e'ulted in 21.4 g /6# N$2.

-hat i' the e)centage yield;/66 ! N$3 → /6# N$2 ! 2$

a, 100 c, #4.3

&, 2".4 d, 9#.6

11. ow (any g)a(' of 2$ will &e fo)(ed when 16.0 g 2 i' allowed to )eact with 16.0

g $2 acco)ding to

22 ! $2 → 22$;

a, 19.0 g c, <.00 g

&, 144 g d, 32.0 g

12. -hen 9.00 g of 2 )eact' with 32.0 g of $2 in an elo'ion 22 ! $2 → 22$ the

final ga' (itu)e will contain:

a, 2 2$ and $2 c, $2 and 2$ only

&, 2 and 2$ only d, 2 and $2 only

13. 1.0#6 g of (etal ca)&onate containing an unknown (etal we)e heated to gi=e the

(etal oide and 0.3"6 g /$2.

/$3+', ! heat→ $+', ! /$2+g,

-hat i' the identity of the (etal ;a, g c, Cn



&, /u d, Ba

14. Sty)ene the &uilding &lock of oly'ty)ene i' a hyd)oca)&on a co(ound

containing only / and . gi=en 'a(le i' &u)ned co(letely and it )oduce' 1.491 g of

/$2 and 0.303 g of 2$. Dete)(ine the e(i)ical fo)(ula of the co(ound.

a, / c, /23

&, /2 d, /2#

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Assignment 2.docx