Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

ICSE Class 10 Answered

Pls solve it.
question image
Asked by prodyumna02 | 20 Mar, 2019, 04:15: PM
answered-by-expert Expert Answer
We know that hydrocarbon contains only hydrogen and carbon.
 
(a) Therefore hydrocarbon X contains hydrogen and carbon.
 
(b) The copper oxide acts as an oxidising agent.
 
(c) 
 
    (i) No. of moles of CO2 
 
 
       The volume of  CO2 = 224 ml
 
        We know,
 
         1 mole = 22400 ml
 
         So 224 ml will be 
                                    space equals space 224 over 22400 equals space 0.01 space mlo 
 
Also,
 
(ii) 22400 ml contains 12 gm of carbon
 
     That is 1 mole contains 12 g of C
 
     So 0.01 mole will contain = 0.12 g of C
 
(iii) Mass of hydrogen = total mass of hydrocarbon − mass of carbon
 
 
      mass of hydrocarbon = 0.145 g
 
 
     Mass of hydrogen = 0.145 − 0.12
 
                               = 0.025 g
 
(iv) Mass of carbon = 0.12 gm
 
     Mass of hydrogen = 0.025 g
 
    Atomic mass of carbon = 12 
 
    Atomic mass of hydrogen = 1
 
No. space of space atoms space of space Carbon space equals space fraction numerator 0.12 over denominator 12 end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 0.01 No. space of space atoms space of space space hydrogen space equals space fraction numerator 0.025 over denominator 1 end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 1 Simplest space ratio space equals space fraction numerator 0.025 over denominator 0.01 end fraction space space space space space space space space space space space space space space space space space space space space space space space equals space 2.5 Simplest space ratio space equals space fraction numerator 0.01 over denominator 0.01 end fraction space space space space space space space space space space space space space space space space space space space space space space space equals space 1
 
Multiply 2.5 and 1 by 2 to get the simplest ratio,
 
So, the empirical formula is C2H5 
Answered by Varsha | 20 Mar, 2019, 07:20: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
ICSE 10 - Chemistry
What will be the mass. ??
question image
Asked by jrvedant208 | 05 Feb, 2024, 10:37: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Chemistry
How to calculate Emphirical formula and Molecular formula? thanks.
Asked by rashikulkarni28 | 10 Jul, 2022, 10:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Chemistry
In Chemistry, in a given reaction , how to recognize which reaction it is  i.e oxidation,reduction or redox reaction?
Asked by rashikulkarni28 | 25 Jun, 2022, 10:24: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Chemistry
b) one ..
question image
Asked by rdk_kulkarni | 09 Mar, 2021, 08:55: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Chemistry
L
question image
Asked by sdebasish44 | 26 Dec, 2020, 09:45: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Chemistry
Find the volume of oxygen at STP required for the complete combustion of 2 litres of carbon monoxide at S.T.P.  
Asked by palshivom72 | 14 Jul, 2020, 07:56: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Chemistry
why mole concept important
Asked by jhabijay01 | 27 May, 2020, 12:20: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Chemistry
A mixture of hydrogen and chlorine occupying 36 cm3 was exploded. On shaking it with water, 4cm3 of hydrogen was left behind. Find the composition of the mixture.
Asked by aashimegh | 04 Sep, 2019, 08:53: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Chemistry
What volume of oxygen at STP is required to affect the combustion of 11 litres of ethylene [C2H4] at 273o C and 380 mm of Hg pressure?                         C2H4+3O22CO2 + 2H2O
Asked by aashimegh | 04 Sep, 2019, 08:37: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 10 - Chemistry
Calculate the number of molecules in 1 kg of Calcium Chloride.
Asked by aashimegh | 28 Aug, 2019, 05:25: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×