16th ques

Asked by lovemaan5500 | 26th Nov, 2017, 06:30: AM

Expert Answer:

space I t s space a space c o m b u s t i o n space a n a l y s i s space
space space space space space space space space space A c i d space plus space O subscript 2 space rightwards arrow for blank of space C O subscript 2 space end subscript space plus space H subscript 2 O
space space space space space space space space 0.2 g m space space space space space space space space space space space space space space space 0.50 g m space space space space space 0.089 g m
A l l space C space c o n v e r t e d space t o space C O subscript 2
A l l space H space c o n v e r t e d space t o space H subscript 2 O
a n d space o t h e r space e l e m e n t space l i k e space O space i s space d e t e r m i n e d space b y space s u b s t r a c t i o n space

1 right parenthesis space C a l c u l a t e space m a s s space o f space C space i n space 0.50 g m s space o f space C O subscript 2
M a s s space o f space C space equals space 12 space a n d space t h a t space o f space C O subscript 2 space i s space 44
therefore space 22 over 44 cross times space 0.50 space equals space 0.14 space g space o f space C
c o n v e r t space t o space a m o u n t space i n space m o l e s space left parenthesis n right parenthesis
therefore n space equals space fraction numerator 0.14 over denominator 12 end fraction space equals space 0.011 space m o l space o f space C
2 right parenthesis space c a l c u l a t e space m a s s space o f space H space i n space 0.089 space g m s space o f space H subscript 2 O
m a s s space o f space H space equals space 1 space a n d space t h a t space o f space space H subscript 2 O space i s space 18
therefore space 2 over 18 cross times 0.089 space equals space 0.0098 space g m space o f space H
c o n v e r t space t o space a m o u n t space i n space m o l e s space left parenthesis n right parenthesis
therefore n equals space fraction numerator 0.0098 over denominator 1 end fraction equals 0.0098 space m o l space o f space H
3 right parenthesis space space N o w comma space c a l c u l a t e space m a s s space o f space O space i n space 0.2 space g m space o f space a c i d space b y space s u b s t r a c t i n g space m a s s space o f space C space a n d space H
space space space space m a s s space o f space O space equals space space m a s s space o f space a c i d space minus space m a s s space o f space C space minus m a s s space o f space H
space space space space space space space space space space space space space space space space space space space space space equals space space 0.2 minus 0.14 minus 0.0098 space equals space 0.050 space g m space o f space O
c o n v e r t space t o space a m o u n t space i n space m o l e s space left parenthesis n right parenthesis
therefore space n equals space fraction numerator 0.050 over denominator 16 end fraction equals space 0.00313 space m o l space o f space O
N o w comma space w e space h a v e space space C equals 0.011 space m o l space space space H equals 0.0098 space m o l space space space space O equals space 0.00313 space m o l
n o w space d i v i d e space e a c h space a m o u n t space b y space t h e space s m a l l e s t space t o space g e t space t h e space l o w e s t space w h o l e space n o. space r a t i o
C equals space fraction numerator 0.011 over denominator 0.003 end fraction equals 3.67 space
H space equals space fraction numerator 0.010 over denominator 0.003 end fraction equals space 3.2 space equals space 3
O space equals fraction numerator 0.003 over denominator 0.003 end fraction equals space 1
w e space g e t space comma space C subscript 3.6 end subscript H subscript 3 O subscript 1 space end subscript space m u l t i l y i n g space i t space w i t h space 2 space w e space g e t space o u r space e m p e r i c a l space f o r m u l a space i. e. comma C subscript 7 H subscript 6 O subscript 2
G i v e n space m o l e c u l a r space m a s s space o f space c i d space equals space 244 g m space
C subscript 7 H subscript 6 O subscript 2 space equals space left parenthesis 7 cross times 12 right parenthesis space plus space left parenthesis 6 cross times 1 right parenthesis space plus space left parenthesis 2 cross times 16 right parenthesis equals 122
therefore 244 space equals space n space cross times 122
n equals 244 over 122 space equals space space 2
therefore space b y space m u l t i l y i n g space e m p e r c a l space f o r m u l a space b y space 2 space w e space g e t space m o l e c u l a r space f o r m u l a space i. e. comma space C subscript 14 H subscript 12 O subscript 4
m o l e c u l a r space f o r m u l a space o f space g i v e n space a c i d space i s space space C subscript 14 H subscript 12 O subscript 4.

Answered by Ramandeep | 28th Nov, 2017, 11:52: AM