Electrolysis and Electrolytes
Trending Questions
Q. 31. What is the pH of salt of strong acid and weak base?
Q. 400 ml of 0.2 M HCl solution is mixed with 100 ml of 0.4 NaOH solution. the pH of the resul†an t solution become
Q. 57. the decomposition of N2O4 to NO2 is carried out at 280K in chloroform. when equilibrium has been established 0.2 mol of N2O4 and 2*10 raise to -3 ml of NO2 are present in 2 litre of solution .the equilibrium constant for reaction N2O4 is in dyanic equilibrium with 2NO2 IS ?
Q. pH of 0.2 M sodium acetate solution is (pKa of CH3COOH is 4.74)?
Q. Which one of the following has the highest dipole moment and why?
A. AsH3
B. SbH3
C. PH3
D. NH3
Q. 14. pH of a saturated solution of Ba(OH)2 is 12.The value of solubility product (Ksp) of Ba(OH)2 is:
Q. 1 Mol of kclo3 is thermally decomposed in excess of Aluminium is burnt in the gaseous product how many moles of Al2O3 are formed??
a 1
b 2
c 1.5
d 3
a 1
b 2
c 1.5
d 3
Q. Why rate of SN1 reaction is directly proportional to the stability of carbocation ?
Q. 3.65 g of HCL is present in 1 L of solution at 25 degrees celsius. If x L of water is added such that pH change by 1 unit at 25 degrees celsius, the value if x is (Assume no change in volume due to addition of acid in water
Q. The pH of 0.01 M aqueous solution of a salt of weak acid and strong base is (Ka of weak acidic = 10–4)is
1)8
2)7
3)4
4)9
Q.
For the homogeneous gas phase equilibrium 4NH3(g)+5O2(g)⇔4NO(g)+6H2O(g) the units of equilibrium constant ′K′C are
mol L−1
L mol−1
mol2 L2
L2 mol−2
Q. 46. The decomposition of KClO3 (s) on heating takes place as KClO3----->KCl + O2 KClO3------->KClO4 +KCl If 2 gm of sample of KClO3 on decomposition gives 224 my of O2 at STP then calculate the percentage by mass of KCl in the residue
Q. 0.05 m ammonium hydroxide solution is dissolve in 0.001m ammonium chloride solution what will be the pH of OH- concentration of this solution?
Q. 5 A 25 ml sample of 0. 1 M HCI is titrated with 0.1 M NaOH. What is the pH of the solution a the point where 24.9 and 25.1 ml of NaOH have been added? (I) 8.7, 10.7 (3) 3.7, 9.7 (2) 3.7, 5.3 (4) 3.7, 10.3
Q.
The following equilibrium exists in aqueous solution
CH3COOH ⇌ CH3COO- + H+
If dilute HCl is added:
Acetate ion concentration will decrease
The equilibrium constant will increase.
The equilibrium constant will decrease
Acetate ion concentration will increase
Q. 21. The pH of a salt used to make tasty and crispy pakoras is 14. Identify the salt and write the chemical equation for its formation
Q. 17. In a container, 1L of aqueous CH3COOH is present and pH of this solution is 3. Now 2g charcoal is added in this container and pH of CH3COOH solution become 4. the mass of CH3COOH adsorbed per gram of charcoal is
Q. The pH of a 0.02M ammonia solution which is 5% ionised will b
Q. 18. Identify oxidation and reduction process C2H4 + H2 = C2H6
Q. find out pH of solution having 2 × 10^{-3} moles of OH^- ions in 2 litre solutio
Q.
CuS→Cu+SO2 Calculate n-factor of CuS in this Reaction.
Q. 15 An alkene A contains three c-c, eight C-H sigma bonds and one C-C Pi bond. A On ozonolysis gives two moles of aldehyde of molar mass 44u. Write IUPAC name of A
Q. Calculate the pH of N÷1000 sodium hydroxide (NaOH) solution assuming complete ionisation
Q. When 100 mL of 0.1 M NH4OH is added to 100 mL of 0.1 M HCl, pH of solution is (pKb of NH4OH is 4.74)?
A3.28
B4.28
C5.28
D6.28
Q. The pH of a solution is increased from 3 to 6, its H+ concentration will be (1) Reduced to half (2) Reduced by 1000 times (3) Doubled (4) Increased by 1000 times
Q. Derive the expression for pH of hydrolysis of Ammonium carbonate (Nh4)2CO3.
Q.
Given that 2Cl−→Cl2+2e−, E∘=−1.36V;
H2O→2H++12O2+2e−, E∘=−1.23V. On electrolysing 1M NaCl solution with inert electrodes, which of the following is correct regarding liberation of electrolytic products ?
Cathode : Na and H2
Cathode : Na, O2
Anode : O2
Anode : Cl2
Q. 24. Find the pH of the solution formed by addition of 3.65g of HCL and 40g of NaOH.
Q. 4. 0.40 g of NaOH was added to 1 litre of a buffer solution. Its buffer capacity is found to be 0.06. Its pH change will be ? 0.33 0.17 1.0 0.01
Q. Ka for hcn is 5\ast10^{-10}.For maintaining a constant ph of 9, the volume of 5M kcn solution required to be added to 10ml of 2M hcn solution is A.2ml B.5ml C.3ml D.4ml
