Answer
Verified
388.2k+ views
Hint: Contact process is used to manufacture sulphuric acid in high concentrations needed for industrial processes. There are three steps involved in the contact process. Catalyst is a chemical which does not involve in the reaction but fastens the reaction towards the product.
Complete step by step answer:
-We know that the contact process is three step processes.
-In the first step Sulphur dioxide is going to prepare from Sulphur.
-In the second step Sulphur dioxide is converted to Sulphur trioxide.
-Without a catalyst it is very difficult to prepare Sulphur trioxide from Sulphur dioxide. There is a need for a catalyst in the preparation of Sulphur trioxide from Sulphur dioxide (second step).
-In the second step addition of an excess amount of oxygen to sulphur dioxide in the presence of the catalyst takes place at higher temperature and pressure in the contact process.
\[S{{O}_{2}}+{{O}_{2}}\xrightarrow[{{450}^{o}}C,1-2atm]{Catalyst}S{{O}_{3}}\]
-Platinum commonly used to be the catalyst for this reaction in the second step.
-However, platinum is susceptible to reacting with arsenic impurities in the sulfur feedstock.
So, platinum is replaced with vanadium (V) pentoxide (\[{{V}_{2}}{{O}_{5}}\]) in the contact process.
-In the third step Sulphur trioxide is going to convert into sulphuric acid (\[{{H}_{2}}S{{O}_{4}}\]).
-So, the catalyst used in the contact process is vanadium (V) pentoxide (\[{{V}_{2}}{{O}_{5}}\]).
So, the correct option is B.
Note:
Don’t be confused with the words Sulphur dioxide, Sulphur trioxide and Sulphuric acid.
-The molecular formula of Sulphur dioxide is \[S{{O}_{2}}\].
-The molecular formula of Sulphur trioxide is \[S{{O}_{3}}\].
-The molecular formula of Sulphuric acid is \[{{H}_{2}}S{{O}_{4}}\].
Complete step by step answer:
-We know that the contact process is three step processes.
-In the first step Sulphur dioxide is going to prepare from Sulphur.
-In the second step Sulphur dioxide is converted to Sulphur trioxide.
-Without a catalyst it is very difficult to prepare Sulphur trioxide from Sulphur dioxide. There is a need for a catalyst in the preparation of Sulphur trioxide from Sulphur dioxide (second step).
-In the second step addition of an excess amount of oxygen to sulphur dioxide in the presence of the catalyst takes place at higher temperature and pressure in the contact process.
\[S{{O}_{2}}+{{O}_{2}}\xrightarrow[{{450}^{o}}C,1-2atm]{Catalyst}S{{O}_{3}}\]
-Platinum commonly used to be the catalyst for this reaction in the second step.
-However, platinum is susceptible to reacting with arsenic impurities in the sulfur feedstock.
So, platinum is replaced with vanadium (V) pentoxide (\[{{V}_{2}}{{O}_{5}}\]) in the contact process.
-In the third step Sulphur trioxide is going to convert into sulphuric acid (\[{{H}_{2}}S{{O}_{4}}\]).
-So, the catalyst used in the contact process is vanadium (V) pentoxide (\[{{V}_{2}}{{O}_{5}}\]).
So, the correct option is B.
Note:
Don’t be confused with the words Sulphur dioxide, Sulphur trioxide and Sulphuric acid.
-The molecular formula of Sulphur dioxide is \[S{{O}_{2}}\].
-The molecular formula of Sulphur trioxide is \[S{{O}_{3}}\].
-The molecular formula of Sulphuric acid is \[{{H}_{2}}S{{O}_{4}}\].
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 Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
How do you solve x2 11x + 28 0 using the quadratic class 10 maths CBSE
Select the correct plural noun from the given singular class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
The sum of three consecutive multiples of 11 is 363 class 7 maths CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
How many squares are there in a chess board A 1296 class 11 maths CBSE