0.01 M acetic acid solution is 1% ionised, then pH of this acetic acid solution is :

KH value for some gases at the same temperature 'T' are given : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-st...

Kp for the following reaction is 3.0 at 1000 K. CO2(g) + C(s) $$\rightleftharpoons$$ 2CO(g) What will be the value of Kc for the reaction at the same ...

The pH of the solution containing 50 mL each of 0.10 M sodium acetate and 0.01 M acetic acid is [Given pKa of CH3COOH = 4.57]...

3O2(g) $$\rightleftharpoons$$ 2O3(g) for the above reaction at 298 K, Kc is found to be 3.0 $$\times$$ 10$$-$$59. If the concentration of O2 at equili...

The pKb of dimethyl amine and pKa of acetic acid are 3.27 and 4.77 respectively at T (K). The correct option for the pH of dimethyl ammonium acetate s...

Hydrolysis of sucrose is given by the following reaction.Sucrose + H2O ⇌ Glucose + FructoseIf the equilibrium constant (Kc) is 2 $$ \times $$ 1013 at ...

Find out the solubility of Ni(OH)2 in 0.1M NaOH. Given that the ionic product of Ni(OH)2 is 2 $$ \times $$ 10-15.

Conjugate base for Bronsted acids H2O and HF are :

pH of a saturated solution of Ca(OH)2 is 9. The solubility product (Ksp) of Ca(OH)2 is :

Which will make basic buffer?

The solubility of BaSO4 in water is 2.42 × 10–3 g L–1 at 298 K. The value of its solubility product (Ksp) will be (Given molar mass of BaSO4 = 233 g...

Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations : A. 60 mL $${M \over {10}}$$ HCl + 40 mL $$...

Which one of the following conditions will favour maximum formation of the product in the reaction A2(g) + B2(g) ⇌ X2(g) , $$\Delta $$rH = –X kJ ?...

The equilibrium constants of the following are N2 + 3H2 $$\rightleftharpoons$$ 2NH3;     K1 N2 + O2 $$\rightleftharpoons$$ ...

Concentration of the Ag+ ions in a saturated solution of Ag2C2O4 is 2.2 $$ \times $$ 10$$-$$4 mol L$$-$$1. Solubility product of Ag2C2O4 is ...

A 20 litre container at 400 K contains CO2(g) at pressure 0.4 atm and an excess of SrO (neglect the volume of solid SrO). The volume of the container ...

The percentage of pyridine (C5H5N) that forms pyridinium ion (C5H5N+H) ina 0.10 M aqueous pyridine solution (Kb for C5H5N = 1.7 $$ \times $$ 10$$-$$9...

Which of the following fluro-compounds is most likely to behave as a Lewis base ?

The solubility of AgCl(s) with solubility product 1.6 $$ \times $$ 10$$-$$10 in 0.1 M NaCl solution would be

Consider the following liquid-vapour equilibrium. Liquid $$\rightleftharpoons$$ Vapour Which of the following relations is correct ?

MY and NY3, two nearly insoluble salts, have the same Ksp values of 6.2 $$ \times $$ 10$$-$$13 at room temperature. Which statement would be true in r...

What is the pH of the resulting solution when equal volumes of 0.1 M NaOH and 0.01 M HCl are mixed?

If the equilibrium constant for N2(g) + O2(g) $$\rightleftharpoons$$ 2NO(g) is K, the equilibrium constant for $${1 \over 2}$$ N2(g) + $${1 \over 2}...

Aqueous solution of which of the following compounds is the best conductor of electric current ?

Which one of the following pairs of solution is not an acidic buffer ?

Which of the following statements is correct for a reversible process in a state of equilibrium?

The Ksp of Ag2CrO4,  AgCl,  AgBr  and Agl  are respectively, 1.1 $$ \times $$ 10$$-$$12, 1.8 $$ \times $$ 10$$-...

If the value of equilibrium constant for a particular reaction is 1.6 $$ \times $$ 1012, then at equilibrium the system will contain

Which of the following salts will give highest pH in water?

Using the Gibb's energy change, $$\Delta $$Go = +63.3 kJ, for the following reaction, Ag2CO3(s) $$\rightleftharpoons$$ 2 Ag+(aq) + CO32$$-$$ (aq) th...

For a given exothermic reaction, Kp and K'p are the equilibrium constants at temperatures T1 and T2, respectively. Assuming that heat of reaction is...

For the reversible reaction, N2(g) + 3H2(g) $$\rightleftharpoons$$ 2NH3(g) + heat The equilibrium shifts in forward direction...

Accumulation of lactic acid (HC3H5O3), a monobasic acid in tissues leads to pain and a feeling of fatigue. In a 0.10 M aqueous solution, lactic acid i...

At 100oC the Kw of water is 55 times its value at 25oC. What will be the pH of neutral solution? (log 55 = 1.74)

The values of Ksp of CaCO3 and CaC2O4 are 4.7 $$ \times $$ 10$$-$$9 and 1.3 $$ \times $$ $$-$$9 respectively at 25oC. If the mixture of these two is ...

The dissociation constant of weak acid is 1 $$ \times $$ 10$$-$$4. In order to prepare a buffer solution with a pH = 5, the [Salt]/[Acid] ratio should...

KMnO4 can be prepared from K2MnO4 as per the reaction, 3MnO42$$-$$ + 2H2O $$\rightleftharpoons$$ 2MnO4$$-$$ + MnO2 + 4OH$$-$$ The reaction can go t...

Which of these is least likely to act as a lewis base ?

Given that the equilibrium constant for the reaction, 2SO2(g) + O2(g) $$\rightleftharpoons$$ 2SO3(g) has a value of 278 at a particular temperature....

Given the reaction between 2 gases represented by A2 and B2 to give the compound AB(g), A2(g) + B2(g) $$\rightleftharpoons$$ 2AB(g) At equilibrium,...

pH of a saturated solution of Ba(OH)2 is 12. The value of solubility product (Ksp) of Ba(OH)2 is

Equimolar solutions of the following substances were prepared separately. Which one of these will record the highest pH value ?

Buffer solutions have constant acidity and alkalinity because

In qualitative analysis, the metals of group I can be separated from other ions by precipitating them as chloride salts. A solution initially contains...

The value of $$\Delta $$H for the reaction X2(g) + 4Y2(g) $$\rightleftharpoons$$ 2XY4(g) is less than zero. Formation of XY4(g) will be favoured at ...

A buffer solution is prepared in which the concentration of NH3 is 0.30 M and the concentration of NH+4 is 0.20 M. If the equilibrium constant, Kb fo...

For the reaction, N2(g) + O2(g) $$\rightleftharpoons$$ 2NO(g), the equilibrium constant is K1. The equilibrium constant is K2 for the reaction, 2NO(g...

Which of the following is least likely to behave as Lewis base?

The reaction, 2A(g) + B(g) $$\rightleftharpoons$$ 3C(g) + D(g) is begun with the concentrations of A and B both at an initial value of 1.00 M. When...

If pH of a saturated solution of Ba(OH)2 is 12, the value of its Ksp is

In a buffer solution containing equal concentration of B$$-$$ and HB, the Kb for B$$-$$ is 10$$-$$10. The pH of buffer solution is ...

What is [H+] in mol/L of a solution that is 0.20 M in CH3COONa and 0.10 M in CH3COOH? Ka for CH3COOH = 1.8 $$ \times $$ 10$$-$$5...

In which of the following equilibrium Kc and Kp are not equal?

The dissociation constants for acetic acid and HCN at 25oC are 1.5 $$ \times $$ 10$$-$$5 and 4.5 $$ \times $$ 10$$-$$10 respectively. The equilibri...

The ionization constant of ammonium hydroxide is 1.77 $$ \times $$ 10$$-$$5 at 298 K. Hydrolysis constant of ammonium chloride is

What is the [OH$$-$$] in the final solution prepared by mixing 20.0 mL of 0.050 M HCl with 30.0 mL of 0.10 M Ba(OH)2?

Which of the following molecules acts as a Lewis acid?

The dissociation equilibrium of a gass AB2 can be represented as : 2AB2(g) $$\rightleftharpoons$$ 2AB(g) + B2(g) The degree of dissociation is x and...

If the concentration of OH$$-$$ ions in the reaction Fe(OH)3(s) $$\rightleftharpoons$$ Fe3+(aq) + 3OH$$-$$(aq) is decreased by 1/4 times, then equil...

The value of equilibrium constant of the reaction HI(g) $$\rightleftharpoons$$ $${1 \over 2}$$H2(g) + $${1 \over 2}$$I2(g) is 8.0. The The equilibriu...

The values of for the reactions, X $$\rightleftharpoons$$ Y + Z      . . . .(i) A $$\rightleftharpoons$$ 2B  &...

Equal volumes of three acid solutions of pH 3, 4 and 5 are mixed in a vessel. What will be the H+ ion concentration in the mixture?

The equilibrium constants of the following are N2 + 3H2 $$\rightleftharpoons$$ 2NH3;     K1 N2 + O2 $$\rightleftharpoons$$ ...

Calculate the pOH of a solution at 25oC that contains 1 $$ \times $$ 10$$-$$10 M of hydronium ions, i.e. H3O+....

A weak acid, HA, has a Ka of 1.00 $$ \times $$ 10$$-$$5. If 0.100 mol of this acid is dissolved in one litre of water, the percentage of acid dissocia...

For the reaction : CH4(g) + 2O2(g) $$\rightleftharpoons$$ CO2(g) + 2H2O(l), $$\Delta $$Hr = $$-$$ 170.8 kJ mol$$-$$1. Which of the following state...

Which of the following pairs constitutes a buffer?

The hydrogen ion concentration of a 10$$-$$8 M, HCl aqueous solution at 298 K (Kw = 10$$-$$14) is

H2S gas when passed through a solution of cations containing HCl precipitates the cations of second group of qualitative analysis but not those belong...

At 25oC, the dissociation constant of a base, BOH, is 1.0 $$ \times $$ 10$$-$$12. The concentration of hydroxyl ions in 0.01 M aqueous solution of the...

Equilibrium constants K1 and K2 for the following equilibriam: are related as ...

The solubility product of a sparingly soluble salt AX2 is 3.2 $$ \times $$ 10$$-$$11. Its solubility (in moles/L) is

The rapid change of pH near the stoichiometric point of an acid-base titration is the basis of indicator detection. pH of the solution is related to r...

The equilibrium constants of the following are N2 + 3H2 $$\rightleftharpoons$$ 2NH3;     K1 N2 + O2 $$\rightleftharpoons$$ ...

Which one of the following statements is not true?

In Haber process 30 litres of dihydrogen and 30 litres of dinitrogen were taken for reaction which yielded only 50% of the expected product. What will...

The reaction quotient (Q) for the reaction N2(g) + 3H2(g) $$\rightleftharpoons$$ 2NH3(g) is given by $$Q = {{{{\left[ {N{H_3}} \right]}^2}} \over {\...

The solubility product of AgI at 25oC is 1.0 $$ \times $$ 10$$-$$16 mol2 L$$-$$2. The solubility of AgI in 10$$-$$4 N solution of KI at 25oC is approx...

Solubility of MX2 type electrolytes is 0.5 $$ \times $$ 10$$-$$4 mole/lit., then find out Ksp of electrolytes.

Reaction BaO2(g) $$\rightleftharpoons$$ BaO(s) + O2(g); $$\Delta $$H = +ve. In equilibrium condition, pressure of O2 depends on ...

Which has highest pH?

Solution of 0.1 N NH4OH and 0.1 N NH4Cl has pH 9.25. Then find out pKb of NH4OH

In HS$$-$$, I$$-$$, R $$-$$ NH2, NH3 order of proton accepting tendency will be

Ionisation constant of CH3COOH is 1.7 $$ \times $$ 10$$-$$5 and concentration of H+ ions is 3.4 $$ \times $$ 10$$-$$4. Then find out initial con...

Solubility of M2S salt is 3.5 $$ \times $$ 10$$-$$6 then find out solubility product.

Correct relation between dissociation constants of a dibasic acid is

Conjugate acid of NH2$$-$$ is

Which statement is wrong about pH and H+?

For any reversible reaction, if we increase concentration of the reactants, then effect on equilibrium constant

Equilibrium constant Kp for following reaction MgCO3(s) $$\rightleftharpoons$$ MgO(s) + CO2(g)