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Assertion(A): Only a small amount of HCl...

Assertion(A): Only a small amount of HCl is required in the reduction of nitro compound with iron scrap and HCl in the presence of steam.
Reson(R ): `FeCl_(2)` formed get hydrolysed to release HCl during the reaction.

A

Both assertio and reason are worng

B

Both assertion and reason are correct statement but reason is not correct explaination of assertion.

C

Assertion is correct statements and reason is correct explanation of assertion.

D

Both asseration and reason are correct statements and reason is correct explanation of assertion .

Text Solution

Verified by Experts

Assertion and reason both are correct and reason is the correct explanation of asseration.
Only small amount of HCl is required in the reduction of nitro compounds with iron scrap and HCl in the presence of steam becaue `FeCl_(2)` formed gets hydrolysed to released HCl during the reaciton.
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Concrete is produced form a mixture of cement, water and small stones. Small amount of gypsum, CaSO_(4).2H_(2)O is added in coment production to impove the subsequent hardening of concrete. The elevated temperature during the production of cement may lead to the formation of unwanted hemihydrate CaSO_(4)(1)/(2)H_(2)O according to reaction. CaSO_(4)2H_(2)O(s) rarr CaSO_(4)(1)/(2)H_(2)O(s)+(3)/(2)H_(2)O(g) The Delta_(f)H^(Theta) of CaSO_(2).2H_(2)O(s),CaSO_(4)(1)/(2)H_(2)O(s),H_(2)O(g) are -2021.0 kJ mol^(-1), -1575.0 kJ mol^(-1) and -241.8 kJ mol^(-1) , respectively. The respective values of their standard entropies are 194.0, 130.0 and 188.0 J K^(-1)mol^(-1) . The values of R = 8.314JK^(-1)mol^(-1) = 0.0831L bar mol^(-1)K^(-1) . Answer the following questions on the basis of above information. The value of DeltaG^(Theta) for the reaction at 298K is

Concrete is produced form a mixture of cement, water and small stones. Small amount of gypsum, CaSO_(4).2H_(2)O is added in coment production to impove the subsequent hardening of concrete. The elevated temperature during the production of cement may lead to the formation of unwanted hemihydrate CaSO_(4)(1)/(2)H_(2)O according to reaction. CaSO_(4)2H_(2)O(s) rarr CaSO_(4)(1)/(2)H_(2)O(s)+(3)/(2)H_(2)O(g) The Delta_(f)H^(Theta) of CaSO_(2).2H_(2)O(s),CaSO_(4)(1)/(2)H_(2)O(s),H_(2)O(g) are -2021.0 kJ mol^(-1), -1575.0 kJ mol^(-1) and -241.8 kJ mol^(-1) , respectively. The respective values of their standard entropies are 194.0, 130.0 and 188.0 J K^(-1)mol^(-1) . The values of R = 8.314JK^(-1)mol^(-1) = 0.0831L bar mol^(-1)K^(-1) . Answer the following questions on the basis of above information. The formation of CaSO_(4)(1)/(2)H_(2)O at 298K is

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  11. How will you carry out the following conversion?

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