Answer
Verified
394.5k+ views
Hint: Combustion is the process in which the substances react with excess of oxygen resulting in the formation of carbon dioxide and water. First, find the volume of butane and propane through writing their combustions reactions and then find their ratios.
Complete answer:
Propane is a three carbon atom chemical compound belonging to the category of the alkanes and have the molecular formula as ${{C}_{3}}{{H}_{8}}$($C{{H}_{3}}C{{H}_{2}}C{{H}_{3}}$) and butane is a four carbon atom chemical compound also belongs to the category of alkanes and have the molecular formula as ${{C}_{4}}{{H}_{8}}$($C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}$).
By the term combustion, we mean that the chemical substances react with the excess of oxygen to give carbon dioxide and water.
The total volume of mixture of propane and butane is 3L.
So, let's consider the volume of propane is v litre.
And the volume of butane is 3-v litre.
Now, both propane and butane react with oxygen to give carbon dioxide and water.
Combustion reactions of both propane and butane are as under:
${{C}_ {3}} {{H}_ {8}} (s)+5{{O}_ {2}} (g)\to 3C{{O}_ {2}} (s)+4{{H}_ {2}} O(l)$
1 mol 3 moles
v L 3vL -----------(1)
v liters of propane produce 3v litres of carbon dioxide.
${{C}_ {4}} {{H}_ {10}} (s)+\dfrac {13}{2} {{O}_ {2}} (g)\to 4C{{O}_ {2}} (s)+5{{H}_ {2}} O(l)$
1 mol 4 mol
(3-v) L 4(3-v) L -----------(2)
(3-v) L of butane produces 4(3-v) L litres of carbon dioxide.
As, we have been knowing that complete combustion of butane and propane produces 10L of $C{{O}_ {2}} $, then from equations (1) and (2), we get:
3vL + 4(3-v) L =10L
3v + 12 -4v = 10
12- v= 10
v= 12-10
v=2
So, the volume of propane is: vL
= 2L
Similarly, the volume of butane is: (3-v) L
= (3-2)
=1
Now calculate, the ratio of propane to butane which is:
Ratio= $\dfrac {2}{1} $
Hence, the ratio of propane to butane is 2:1.
So, option (b) is correct.
Note: While calculating the ratio, don’t write ratio of butane to propane instead we have been asked the ratio of propane to butane. So, read the statement carefully.
Complete answer:
Propane is a three carbon atom chemical compound belonging to the category of the alkanes and have the molecular formula as ${{C}_{3}}{{H}_{8}}$($C{{H}_{3}}C{{H}_{2}}C{{H}_{3}}$) and butane is a four carbon atom chemical compound also belongs to the category of alkanes and have the molecular formula as ${{C}_{4}}{{H}_{8}}$($C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}$).
By the term combustion, we mean that the chemical substances react with the excess of oxygen to give carbon dioxide and water.
The total volume of mixture of propane and butane is 3L.
So, let's consider the volume of propane is v litre.
And the volume of butane is 3-v litre.
Now, both propane and butane react with oxygen to give carbon dioxide and water.
Combustion reactions of both propane and butane are as under:
${{C}_ {3}} {{H}_ {8}} (s)+5{{O}_ {2}} (g)\to 3C{{O}_ {2}} (s)+4{{H}_ {2}} O(l)$
1 mol 3 moles
v L 3vL -----------(1)
v liters of propane produce 3v litres of carbon dioxide.
${{C}_ {4}} {{H}_ {10}} (s)+\dfrac {13}{2} {{O}_ {2}} (g)\to 4C{{O}_ {2}} (s)+5{{H}_ {2}} O(l)$
1 mol 4 mol
(3-v) L 4(3-v) L -----------(2)
(3-v) L of butane produces 4(3-v) L litres of carbon dioxide.
As, we have been knowing that complete combustion of butane and propane produces 10L of $C{{O}_ {2}} $, then from equations (1) and (2), we get:
3vL + 4(3-v) L =10L
3v + 12 -4v = 10
12- v= 10
v= 12-10
v=2
So, the volume of propane is: vL
= 2L
Similarly, the volume of butane is: (3-v) L
= (3-2)
=1
Now calculate, the ratio of propane to butane which is:
Ratio= $\dfrac {2}{1} $
Hence, the ratio of propane to butane is 2:1.
So, option (b) is correct.
Note: While calculating the ratio, don’t write ratio of butane to propane instead we have been asked the ratio of propane to butane. So, read the statement carefully.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Difference Between Plant Cell and Animal Cell
Select the word that is correctly spelled a Twelveth class 10 english CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
What organs are located on the left side of your body class 11 biology CBSE
What is BLO What is the full form of BLO class 8 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE