Chemical Engineering - Fertiliser Technology - Discussion
Discussion Forum : Fertiliser Technology - Section 1 (Q.No. 16)
16.
Reaction of dilute sulphuric acid with phosphate rock produces
Discussion:
11 comments Page 1 of 2.
RAVI GUPTA said:
7 years ago
No, Phosphate rock with dilute sulphuric acid produces superphosphate. For phosphoric acid con acid is used.
(2)
Mahesh konduri said:
1 decade ago
So concentrated sulphuric acid (93-98%) is used in manufacture of phosphoric acid. Where as dilute sulphuric acid (62-70%) is used in manufacture of super phosphate.
(1)
Satyam gupta said:
5 years ago
Answer is superphosphate.
(1)
Rathi said:
1 decade ago
Phosphoric acid is produced from fluorapatite, known as phosphate rock, 3Ca3(PO4)2.CaF2, by the addition of concentrated (93%) sulfuric acid in a series of well-stirred reactors.
Munindra said:
1 decade ago
Phosphate rock Ca10(PO4)2F6 + 7H2SO4 gives 3CaH4(PO4)2 + 7CaSO4 + 2HF.
Here concentration of sulphuric acid is 55 to 75%.
It means super phosphate should be the other answer.
So according to me its a multiple answer question where A and B both are correct.
If I am wrong could some one clear my doubt.
Here concentration of sulphuric acid is 55 to 75%.
It means super phosphate should be the other answer.
So according to me its a multiple answer question where A and B both are correct.
If I am wrong could some one clear my doubt.
Manish said:
10 years ago
Answer is given wrong. It should be B.
Phosphoric acid + Phosphate rock gives Trile superphosphate.
Sulfuric acid + Phosphate rock gives Superphosphate.
Phosphoric acid + Phosphate rock gives Trile superphosphate.
Sulfuric acid + Phosphate rock gives Superphosphate.
Ramesh vishwakarma said:
9 years ago
Triple super phosphate is the right answer.
Vijaykumar said:
7 years ago
Phosphate rock with conc H2SO4 makes phosphoric acid but phosphate rock and Dil H2SO4 produce Super phosphate.
Ehsan Ahamad said:
5 years ago
Right answer is B.
Sulphuric acid + phosphate rock = superphosphate.
Sulphuric acid + phosphate rock = superphosphate.
Dhruvil Patel said:
5 years ago
The reaction of the phosphate rock with the sulfuric acid produces phosphoric acid and hydrated calcium sulfate (phosphogypsum), a byproduct. The concentrated phosphoric acid is finally used to manufacture ingredients for inorganic fertiliser.
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