03. Degree of Dissociation
Chemical Equilibrium

229122 Approximate relationship between dissociation constant of water (K) and ionic product of water $\left(\mathbf{K}_{\mathbf{w}}\right)$ is

1 $\mathrm{K}_{\mathrm{w}}=\mathrm{K}$
2 $\mathrm{K}_{\mathrm{w}}=55.6 \times \mathrm{K}$
3 $\mathrm{K}_{\mathrm{w}}=18 \times \mathrm{K}$
4 $\mathrm{K}_{\mathrm{w}}=14 \times \mathrm{K}$
A.M.U. -2009
Chemical Equilibrium

229124 The degree of dissociation of $\mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2}$ in dilute aq. solution containing $7.0 \mathrm{~g}$ of salt per $100 \mathrm{~g}$ of water at $100^{\circ} \mathrm{C}$ is $70 \%$. If vapour pressure of water at $100^{\circ} \mathrm{C}$ is $760 \mathrm{~mm} \mathrm{Hg}$. The vapour pressure of solution is

1 735
2 730
3 760
4 746
Chemical Equilibrium

229125 At a certain temperature, the dissociation constants of formic acid and acetic acid are $1.8 \times 10^{-4}$ and $1.8 \times 10^{-5}$ respectively. The concentration of acetic acid solution in which the hydrogen ion has the same concentration as in $0.001 \mathrm{M}$ formic acid solution is equal to

1 $0.01 \mathrm{M}$
2 $0.001 \mathrm{M}$
3 $0.1 \mathrm{M}$
4 $0.0001 \mathrm{M}$
5 $0.1010 \mathrm{M}$
Chemical Equilibrium

229127 The degree of dissociation of a $0.01 \mathrm{M}$ weak acid is $10^{-3}$. Its pOH is

1 5
2 3
3 9
4 11
Chemical Equilibrium

229122 Approximate relationship between dissociation constant of water (K) and ionic product of water $\left(\mathbf{K}_{\mathbf{w}}\right)$ is

1 $\mathrm{K}_{\mathrm{w}}=\mathrm{K}$
2 $\mathrm{K}_{\mathrm{w}}=55.6 \times \mathrm{K}$
3 $\mathrm{K}_{\mathrm{w}}=18 \times \mathrm{K}$
4 $\mathrm{K}_{\mathrm{w}}=14 \times \mathrm{K}$
A.M.U. -2009
Chemical Equilibrium

229124 The degree of dissociation of $\mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2}$ in dilute aq. solution containing $7.0 \mathrm{~g}$ of salt per $100 \mathrm{~g}$ of water at $100^{\circ} \mathrm{C}$ is $70 \%$. If vapour pressure of water at $100^{\circ} \mathrm{C}$ is $760 \mathrm{~mm} \mathrm{Hg}$. The vapour pressure of solution is

1 735
2 730
3 760
4 746
Chemical Equilibrium

229125 At a certain temperature, the dissociation constants of formic acid and acetic acid are $1.8 \times 10^{-4}$ and $1.8 \times 10^{-5}$ respectively. The concentration of acetic acid solution in which the hydrogen ion has the same concentration as in $0.001 \mathrm{M}$ formic acid solution is equal to

1 $0.01 \mathrm{M}$
2 $0.001 \mathrm{M}$
3 $0.1 \mathrm{M}$
4 $0.0001 \mathrm{M}$
5 $0.1010 \mathrm{M}$
Chemical Equilibrium

229127 The degree of dissociation of a $0.01 \mathrm{M}$ weak acid is $10^{-3}$. Its pOH is

1 5
2 3
3 9
4 11
Chemical Equilibrium

229122 Approximate relationship between dissociation constant of water (K) and ionic product of water $\left(\mathbf{K}_{\mathbf{w}}\right)$ is

1 $\mathrm{K}_{\mathrm{w}}=\mathrm{K}$
2 $\mathrm{K}_{\mathrm{w}}=55.6 \times \mathrm{K}$
3 $\mathrm{K}_{\mathrm{w}}=18 \times \mathrm{K}$
4 $\mathrm{K}_{\mathrm{w}}=14 \times \mathrm{K}$
A.M.U. -2009
Chemical Equilibrium

229124 The degree of dissociation of $\mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2}$ in dilute aq. solution containing $7.0 \mathrm{~g}$ of salt per $100 \mathrm{~g}$ of water at $100^{\circ} \mathrm{C}$ is $70 \%$. If vapour pressure of water at $100^{\circ} \mathrm{C}$ is $760 \mathrm{~mm} \mathrm{Hg}$. The vapour pressure of solution is

1 735
2 730
3 760
4 746
Chemical Equilibrium

229125 At a certain temperature, the dissociation constants of formic acid and acetic acid are $1.8 \times 10^{-4}$ and $1.8 \times 10^{-5}$ respectively. The concentration of acetic acid solution in which the hydrogen ion has the same concentration as in $0.001 \mathrm{M}$ formic acid solution is equal to

1 $0.01 \mathrm{M}$
2 $0.001 \mathrm{M}$
3 $0.1 \mathrm{M}$
4 $0.0001 \mathrm{M}$
5 $0.1010 \mathrm{M}$
Chemical Equilibrium

229127 The degree of dissociation of a $0.01 \mathrm{M}$ weak acid is $10^{-3}$. Its pOH is

1 5
2 3
3 9
4 11
Chemical Equilibrium

229122 Approximate relationship between dissociation constant of water (K) and ionic product of water $\left(\mathbf{K}_{\mathbf{w}}\right)$ is

1 $\mathrm{K}_{\mathrm{w}}=\mathrm{K}$
2 $\mathrm{K}_{\mathrm{w}}=55.6 \times \mathrm{K}$
3 $\mathrm{K}_{\mathrm{w}}=18 \times \mathrm{K}$
4 $\mathrm{K}_{\mathrm{w}}=14 \times \mathrm{K}$
A.M.U. -2009
Chemical Equilibrium

229124 The degree of dissociation of $\mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2}$ in dilute aq. solution containing $7.0 \mathrm{~g}$ of salt per $100 \mathrm{~g}$ of water at $100^{\circ} \mathrm{C}$ is $70 \%$. If vapour pressure of water at $100^{\circ} \mathrm{C}$ is $760 \mathrm{~mm} \mathrm{Hg}$. The vapour pressure of solution is

1 735
2 730
3 760
4 746
Chemical Equilibrium

229125 At a certain temperature, the dissociation constants of formic acid and acetic acid are $1.8 \times 10^{-4}$ and $1.8 \times 10^{-5}$ respectively. The concentration of acetic acid solution in which the hydrogen ion has the same concentration as in $0.001 \mathrm{M}$ formic acid solution is equal to

1 $0.01 \mathrm{M}$
2 $0.001 \mathrm{M}$
3 $0.1 \mathrm{M}$
4 $0.0001 \mathrm{M}$
5 $0.1010 \mathrm{M}$
Chemical Equilibrium

229127 The degree of dissociation of a $0.01 \mathrm{M}$ weak acid is $10^{-3}$. Its pOH is

1 5
2 3
3 9
4 11