JEE Adv and Mains Chemistry 41 Years Solved Video Solutions 1979 – 2019
Sahay Sir > Question Answers > JEE Adv and Mains Chemistry 41 Years Solved Video Solutions 1979 - 2019
20 mL of 0.2M sodium hydroxide is added to 50mL of 0.2Macetic acid to give 70 mL of the solution. What is the pH of this solution ? (Ionisation constant of CH3COOh is 1.8×10^−5)
02
Jun
20 mL of 0.2M sodium hydroxide is added to 50mL of 0.2Macetic acid to give 70 mL of the solution. What is the pH of this solution ? (Ionisation constant of CH3COOh is 1.8×10^−5) 20 mL of 0.2M sodium hydroxide is added to 50mL of 0.2Macetic acid to give 70 mL of the solution. What [...]
Given reason for the statement that “the pH of an aqueous solution of sodium acetate is more than 7”.
02
Jun
Given reason for the statement that “the pH of an aqueous solution of sodium acetate is more than 7”. Given reason for the statement that "the pH of an aqueous solution of sodium acetate is more than 7". June 2, 2021 Category: Chapter 7 - Equilibrium , Chemistry , JEE Adv and Mains Chemistry 41 [...]
The dissociation constant of weak acid HA is 4.9×10^−8. After making the necessary approximations, calculate (a) pH
02
Jun
The dissociation constant of weak acid HA is 4.9×10^−8. After making the necessary approximations, calculate (a) pH calculate (a) pH The dissociation constant of weak acid HA is 4.9×10^−8. After making the necessary approximations June 2, 2021 Category: Chapter 7 - Equilibrium , Chemistry , JEE Adv and Mains Chemistry 41 Years Solved Video Solutions [...]
The concentration of hydrogen ions in a 0.2 M solution of formic acid is 6.4×10^−3 mol L^−1. To this solution, sodium formate is added so as to adjust the concentration of sodium formate to 1 mol L^−1. What will be the pH of this solution? The dissociation constant of formic acid is 2.4×10^−4 and the degree of dissociation of sodium formate is 0.75.
02
Jun
The concentration of hydrogen ions in a 0.2 M solution of formic acid is 6.4×10^−3 mol L^−1. To this solution, sodium formate is added so as to adjust the concentration of sodium formate to 1 mol L^−1. What will be the pH of this solution? The dissociation constant of formic acid is 2.4×10^−4 and the [...]
The pH of blood stream is maintained by a proper balance of H2CO3 and NaHCO3 concentrations. What volume of 5 M NaHCO3 solution, should be mixed with 10 mL sample of blood, which is 2 M in H2CO3 in order to maintain a pH of 7.4(Ka for H2CO3 in blood =7.8×10^−7)
02
Jun
The pH of blood stream is maintained by a proper balance of H2CO3 and NaHCO3 concentrations. What volume of 5 M NaHCO3 solution, should be mixed with 10 mL sample of blood, which is 2 M in H2CO3 in order to maintain a pH of 7.4(Ka for H2CO3 in blood =7.8×10^−7) should be mixed with [...]
An aqueous solution of a metal bromide MBr2 (0.05M) is saturated with H2S. What is the minimum pH at which MS will precipitate ? KSP for MS=6.0×10^-21 . Concentration of saturated H2S=0.1M,K1=10^-7andK2=1.3×10^-13 for H2S .
02
Jun
An aqueous solution of a metal bromide MBr2 (0.05M) is saturated with H2S. What is the minimum pH at which MS will precipitate ? KSP for MS=6.0×10^-21 . Concentration of saturated H2S=0.1M,K1=10^-7andK2=1.3×10^-13 for H2S . An aqueous solution of a metal bromide MBr2 (0.05M) is saturated with H2S. What is the minimum pH at which [...]
For the reaction, Ag(CN)ɵ2⇔Ag⊕+2CNɵ, the equilibrium constant at 25∘C is 4×10^−19 Calculate the silver ion concentration in solution which was originally 0.10 M in KCN and 0.03 M in AgNO3.
02
Jun
For the reaction, Ag(CN)ɵ2⇔Ag⊕+2CNɵ, the equilibrium constant at 25∘C is 4×10^−19 Calculate the silver ion concentration in solution which was originally 0.10 M in KCN and 0.03 M in AgNO3. Ag(CN)ɵ2⇔Ag⊕+2CNɵ For the reaction the equilibrium constant at 25∘C is 4×10^−19 Calculate the silver ion concentration in solution which was originally 0.10 M in KCN [...]
Calculate the pH of an aqueous solution of 1.0 M ammonium formate assuming complete dissociation. (pK a of formic acid =3.8 and pK b of ammonia =4.8)
02
Jun
Calculate the pH of an aqueous solution of 1.0 M ammonium formate assuming complete dissociation. (pK a of formic acid =3.8 and pK b of ammonia =4.8) Calculate the pH of an aqueous solution of 1.0 M ammonium formate assuming complete dissociation. (pK a of formic acid =3.8 and pK b of ammonia =4.8) June [...]
What is the pH of a 0.50 M aqueous NaCN solution? pKb of CN− is 4.70.
02
Jun
What is the pH of a 0.50 M aqueous NaCN solution? pKb of CN− is 4.70. What is the pH of a 0.50 M aqueous NaCN solution? pKb of CN− is 4.70. June 2, 2021 Category: Chapter 7 - Equilibrium , Chemistry , JEE Adv and Mains Chemistry 41 Years Solved Video Solutions 1979 - [...]
The ionization constant of NH4⊕ ion in water is 5.6×10^−10 at 25∘C. The rate constant the reaction of N⊕H4 and OHɵ ion to form NH3 and H2O at 25∘C is 3.4×10^10 L/mol/s. Calculate the rate constant for proton transfer form water to NH3.
02
Jun
The ionization constant of NH4⊕ ion in water is 5.6×10^−10 at 25∘C. The rate constant the reaction of N⊕H4 and OHɵ ion to form NH3 and H2O at 25∘C is 3.4×10^10 L/mol/s. Calculate the rate constant for proton transfer form water to NH3. A buffer solution can be prepared from a mixture of June 2, [...]