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Subject: Chemistry, asked on 13/8/19

Please solve question-H

Subject: Chemistry, asked on 13/8/19

Please solve question-F

Subject: Chemistry, asked on 27/7/19

Kindly explain the chemistry of this question.

30. The enthalpy of neutralization of a weak monoprotic acid (HA) in 1 M solution with a strong base is –55.95 kJ/mol. If the unionized acid required 1.4 kJ/mol heat for its complete ionization and enthalpy of neutralization of the strong monobasic acid with a strong monoacidic base is –57.3 kJ/mol, what is the % ionization of the weak acid in molar solution
(a) 1%
(b) 3.57%
(c) 35.7%
(d) 10%

Subject: Chemistry, asked on 11/7/19

Q30.
Ans: 6.
The word equivalent has confused me.

Subject: Chemistry, asked on 11/7/19

Q2.
Ans: 3.502 kJ.

2. For the reaction : 2A (g) + 3B (g) → 4C (g) + D (l) ;  ∆H = –20 KJ/mole 
Find the heat exchanged when 0.4 mole of A reacts with excess of B in a closed rigid container. The temperature is constant at 300 K. [R = 8.3 J/K mole] 

Subject: Chemistry, asked on 4/7/19

34. p-cresol reacts with chloroform in alkaline medium to give the compound A which adds hydrogen cyanide to form, the compound. B The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is-

Subject: Chemistry, asked on 2/7/19

Ques in pic.
Ans: B
Getting 3.5

A nitrogen-hydrogen mixture initially in the molar ratio of 1 : 3 reached equilibrium to form ammonia when 25% of the N2 and H2 had reacted.  If the total pressure of the system was 21 atm, the partial pressure of ammonia at the equilibrium was:
(a) 4.5 atm
(b) 3.0 atm
(c) 2.0 atm
(d) 1.5 atm

Subject: Chemistry, asked on 9/6/19

Q31.
Ans: A.
How?

(A) Enantiomer

(B) Diastereomers

(C) Meso

(D) Achiral

 

Subject: Chemistry, asked on 6/6/19

Q20.
Ans: C.
Explain thru a mechanism.

20. CH3-CH2-CH2-Br+CH33CO-→CH33COH50°C
(A) CH3 – CH2 – CH3 & SN2
(B) CH3 – CH = CH2 & SN1
(C) CH3 – CH = CH2 & E2
(D) None

Subject: Chemistry, asked on 19/5/19

Q5.
Ans: C.
Explant pls asap

Q5. For a reaction, 2X(s) + 2Y(s) → 2C(l) + D(g)
The qp at 27°C is –28 kcal mol–1, the qv is ________ Kcal mol–1
(A) –27.4
(B) +27.4
(C) –28.6
(D) 28.6

Subject: Chemistry, asked on 24/3/19

Q43.
Help asap!

Subject: Chemistry, asked on 5/3/19

Experts please help.....
The volume of one mole ideal monatomic gas at temperature T on an adiabatic flask is increased from 1 to 2 litre at an external pressure of 1atm. Determine the final temperature......

Subject: Chemistry, asked on 20/2/19

Q24.
Ans: bcd.
Exain B and D.

Subject: Chemistry, asked on 20/2/19

Q30.
Ans: b
How?

Subject: Chemistry, asked on 19/2/19

Q2.
Ans: B.
How?

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