Please show all work and steps. I need help, and this answer didn’t work. Thank
ID: 717600 • Letter: P
Question
Please show all work and steps. I need help, and this answer didn’t work. Thank you!! PartA A2.52-g sample of a compound containing only carbon hydrogen, nitrogen, oxygen, and sulfur was burned in excess oxygen to yield 4.23 g of CO2 and 1.01 g of H2O. Another sample of the same compound, of mass 4.14 g. yielded 2.11 g of SO3. A third sample, of mass 5.66 g. was burned under different conditions to yield 227 g of HNOs as the only ntrogen containing product Calculate the empirical formula of the compourd Express your answer as a chemical formula. Enter the elements in the order: C, H, S, N,O. xX e2 C,H,O SN Prevlous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining
Explanation / Answer
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ANS:
From the first sample ,
% C = [( molar mass of C / Molar mass of CO2 ) x ( mass of CO2 / mass of sample ) ]x100
= [(12 / 44 )x ( 4.23 / 2.52 ) ] x 100
= 45.8
% H = [( molar mass of H / Molar mass of H2O ) x ( mass of H2O / mass of sample ) ]x100
= [(2 / 18 )x ( 1.01 / 2.52 ) ] x 100
= 4.45
% O is = 100 -( % C + % H )
= 100 -( 45.8 +4.45)
= 49.75
No.of moles of O is , = mass/molar mass
= 49.75 / 16
= 3.1
No.of moles of C is = mass / molar mass
= 45.8 / 12
= 3.82 moles
No.of moles of H is = mass / molar mass
= 4.45 / 1
= 4.45 moles
From the second sample,
So % S = [( molar mass of S / Molar mass of SO3 ) x ( mass of SO3 / mass of sample ) ]x100
= [(32 / 80 )x ( 2.11 / 4.14 ) ] x 100
= 20.4
No.of moles of S is = mass / molar mass
= 20.4 / 32
= 0.64 moles
From the third sample,
So % N = [( molar mass of N / Molar mass of HNO3 ) x ( mass of HNO3 / mass of sample ) ]x100
= [(14 / 63 )x ( 2.27 / 5.66 ) ] x 100
= 8.91
No.of moles of N is = mass / molar mass
= 8.91 / 14
= 0.64 moles
Ratio of the no.of moles of C : H : O : S : N is = 3.82 :4.45:3.1:0.64 : 0.64
in simple ineger ratio is : (3.82/0.64) :(4.45/0.64):(3.1/0.64):(0.64/0.64) : (0.64/0.64)
5.9 : 6.9 : 4.9 : 1 : 1
~ 6 : 7 : 5 : 1 : 1
So emperical formula is : C6H7O5SN
THANK YOU
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