QBManager

CHEMISTRY(KCET)

285293 The reaction quotient, ' $Q_{c}^{'}$ is useful in predicting the direction of the reaction. Which of the following is incorrect?

1 If

Q_{c} < K_{c}

, the reverse reaction is favoured.

2 If\(Q_c

3 If

Q_{c} > K_{c}

, forward reaction is favoured.

4 If

Q_{c} = K_{c}

, no reaction occur.

Karnataka CET 2017

CHEMISTRY(KCET)

285291 The relationship between $K_{p}$ and $K_{c}$ is $K_{p} = K_{c} (R T)^{Δ n} g$ . What would be the value of $Δ n$ for the reaction, ${NH}_{4} Cl (s) ⇌ {NH}_{3} (g) + HCl (g)$ ?

1 1

2 0.5

3 1.5

4 2

Explanation:

(d) $K_{p} = K_{c} (R T)^{Δ n g}$
$Δ n_{g} =$ sum of the stoichiometric coefficient of gaseous products - sum of stoichiometric coefficients of gaseous reactants
$Δ n_{g} = 2 - 0 = 2$

Karnataka CET 2018

CHEMISTRY(KCET)

285290 Solubility of AgCl is least in

1 0.1 M NaCl

2 pure water

0.1 M {BaCl}_{2}

0.1 M {AlCl}_{3}

Explanation:

(d) Concentration of common ion
$\propto \frac{1}{solubility}$
In $0.1 M {AlCl}_{3}$ , the concentration of common ion i.e., ${Cl}^{-}$ is high, therefore AgCl will be least soluble in this solution.

Karnataka CET 2019

CHEMISTRY(KCET)

285282 At 500 K , for a reversible reaction

$A_{2} (g) + B_{2} (g) ⇌ 2 AB (g)$
in a closed container,
$K_{C} = 2 \times 10^{- 5}$ . In the presence of catalyst, the equilibrium is attaining 10 times faster. The equilibrium constant $K_{C}$ in the presence of catalyst at the same temperature is

2 \times 10^{- 4}

2 \times 10^{- 6}

2 \times 10^{- 10}

2 \times 10^{- 5}

Karnataka CET 2023

CHEMISTRY(KCET)

285283 A weak acid with ${pK}_{a} 5.9$ and weak base with ${pK}_{b}$ 5.8 are mixed in equal proportions. pH of the resulting solution is

1 7.005

2 7.5

3 7

4 7.05

Explanation:

$\begin{aligned} (d) pH = \frac{1}{2} {pK}_{w} + \frac{1}{2} {pK}_{a} - \frac{1}{2} {pK}_{b} \\ = \frac{1}{2} [{pK}_{w} + {pK}_{a} - {pK}_{b}] \\ = \frac{1}{2} (14 + 5.9 - 5.8) = 7.05 \end{aligned}$

Karnataka CET 2023

NEET DIGITAL LIBRARY

CHEMISTRY(KCET)

285293 The reaction quotient, ' $Q_{c}^{'}$ is useful in predicting the direction of the reaction. Which of the following is incorrect?

1 If

Q_{c} < K_{c}

, the reverse reaction is favoured.

2 If\(Q_c

3 If

Q_{c} > K_{c}

, forward reaction is favoured.

4 If

Q_{c} = K_{c}

, no reaction occur.

Karnataka CET 2017

CHEMISTRY(KCET)

285291 The relationship between $K_{p}$ and $K_{c}$ is $K_{p} = K_{c} (R T)^{Δ n} g$ . What would be the value of $Δ n$ for the reaction, ${NH}_{4} Cl (s) ⇌ {NH}_{3} (g) + HCl (g)$ ?

1 1

2 0.5

3 1.5

4 2

Explanation:

(d) $K_{p} = K_{c} (R T)^{Δ n g}$
$Δ n_{g} =$ sum of the stoichiometric coefficient of gaseous products - sum of stoichiometric coefficients of gaseous reactants
$Δ n_{g} = 2 - 0 = 2$

Karnataka CET 2018

CHEMISTRY(KCET)

285290 Solubility of AgCl is least in

1 0.1 M NaCl

2 pure water

0.1 M {BaCl}_{2}

0.1 M {AlCl}_{3}

Explanation:

(d) Concentration of common ion
$\propto \frac{1}{solubility}$
In $0.1 M {AlCl}_{3}$ , the concentration of common ion i.e., ${Cl}^{-}$ is high, therefore AgCl will be least soluble in this solution.

Karnataka CET 2019

CHEMISTRY(KCET)

2 \times 10^{- 4}

2 \times 10^{- 6}

2 \times 10^{- 10}

2 \times 10^{- 5}

Karnataka CET 2023

CHEMISTRY(KCET)

285283 A weak acid with ${pK}_{a} 5.9$ and weak base with ${pK}_{b}$ 5.8 are mixed in equal proportions. pH of the resulting solution is

1 7.005

2 7.5

3 7

4 7.05

Explanation:

$\begin{aligned} (d) pH = \frac{1}{2} {pK}_{w} + \frac{1}{2} {pK}_{a} - \frac{1}{2} {pK}_{b} \\ = \frac{1}{2} [{pK}_{w} + {pK}_{a} - {pK}_{b}] \\ = \frac{1}{2} (14 + 5.9 - 5.8) = 7.05 \end{aligned}$

Karnataka CET 2023

Join With Us for More Updates

CHEMISTRY(KCET)

285293 The reaction quotient, ' $Q_{c}^{'}$ is useful in predicting the direction of the reaction. Which of the following is incorrect?

1 If

Q_{c} < K_{c}

, the reverse reaction is favoured.

2 If\(Q_c

3 If

Q_{c} > K_{c}

, forward reaction is favoured.

4 If

Q_{c} = K_{c}

, no reaction occur.

Karnataka CET 2017

CHEMISTRY(KCET)

285291 The relationship between $K_{p}$ and $K_{c}$ is $K_{p} = K_{c} (R T)^{Δ n} g$ . What would be the value of $Δ n$ for the reaction, ${NH}_{4} Cl (s) ⇌ {NH}_{3} (g) + HCl (g)$ ?

1 1

2 0.5

3 1.5

4 2

Explanation:

(d) $K_{p} = K_{c} (R T)^{Δ n g}$
$Δ n_{g} =$ sum of the stoichiometric coefficient of gaseous products - sum of stoichiometric coefficients of gaseous reactants
$Δ n_{g} = 2 - 0 = 2$

Karnataka CET 2018

CHEMISTRY(KCET)

285290 Solubility of AgCl is least in

1 0.1 M NaCl

2 pure water

0.1 M {BaCl}_{2}

0.1 M {AlCl}_{3}

Explanation:

(d) Concentration of common ion
$\propto \frac{1}{solubility}$
In $0.1 M {AlCl}_{3}$ , the concentration of common ion i.e., ${Cl}^{-}$ is high, therefore AgCl will be least soluble in this solution.

Karnataka CET 2019

CHEMISTRY(KCET)

2 \times 10^{- 4}

2 \times 10^{- 6}

2 \times 10^{- 10}

2 \times 10^{- 5}

Karnataka CET 2023

CHEMISTRY(KCET)

285283 A weak acid with ${pK}_{a} 5.9$ and weak base with ${pK}_{b}$ 5.8 are mixed in equal proportions. pH of the resulting solution is

1 7.005

2 7.5

3 7

4 7.05

Explanation:

$\begin{aligned} (d) pH = \frac{1}{2} {pK}_{w} + \frac{1}{2} {pK}_{a} - \frac{1}{2} {pK}_{b} \\ = \frac{1}{2} [{pK}_{w} + {pK}_{a} - {pK}_{b}] \\ = \frac{1}{2} (14 + 5.9 - 5.8) = 7.05 \end{aligned}$

Karnataka CET 2023

For More Updates join with Us

Question Bank Series

01. Upto 1300 Quenstions
02. Answer Key
03. Explanations

WhatsApp Here

CHEMISTRY(KCET)

285293 The reaction quotient, ' $Q_{c}^{'}$ is useful in predicting the direction of the reaction. Which of the following is incorrect?

1 If

Q_{c} < K_{c}

, the reverse reaction is favoured.

2 If\(Q_c

3 If

Q_{c} > K_{c}

, forward reaction is favoured.

4 If

Q_{c} = K_{c}

, no reaction occur.

Karnataka CET 2017

CHEMISTRY(KCET)

285291 The relationship between $K_{p}$ and $K_{c}$ is $K_{p} = K_{c} (R T)^{Δ n} g$ . What would be the value of $Δ n$ for the reaction, ${NH}_{4} Cl (s) ⇌ {NH}_{3} (g) + HCl (g)$ ?

1 1

2 0.5

3 1.5

4 2

Explanation:

(d) $K_{p} = K_{c} (R T)^{Δ n g}$
$Δ n_{g} =$ sum of the stoichiometric coefficient of gaseous products - sum of stoichiometric coefficients of gaseous reactants
$Δ n_{g} = 2 - 0 = 2$

Karnataka CET 2018

CHEMISTRY(KCET)

285290 Solubility of AgCl is least in

1 0.1 M NaCl

2 pure water

0.1 M {BaCl}_{2}

0.1 M {AlCl}_{3}

Explanation:

(d) Concentration of common ion
$\propto \frac{1}{solubility}$
In $0.1 M {AlCl}_{3}$ , the concentration of common ion i.e., ${Cl}^{-}$ is high, therefore AgCl will be least soluble in this solution.

Karnataka CET 2019

CHEMISTRY(KCET)

2 \times 10^{- 4}

2 \times 10^{- 6}

2 \times 10^{- 10}

2 \times 10^{- 5}

Karnataka CET 2023

CHEMISTRY(KCET)

285283 A weak acid with ${pK}_{a} 5.9$ and weak base with ${pK}_{b}$ 5.8 are mixed in equal proportions. pH of the resulting solution is

1 7.005

2 7.5

3 7

4 7.05

Explanation:

$\begin{aligned} (d) pH = \frac{1}{2} {pK}_{w} + \frac{1}{2} {pK}_{a} - \frac{1}{2} {pK}_{b} \\ = \frac{1}{2} [{pK}_{w} + {pK}_{a} - {pK}_{b}] \\ = \frac{1}{2} (14 + 5.9 - 5.8) = 7.05 \end{aligned}$

Karnataka CET 2023

NEET DIGITAL LIBRARY

CHEMISTRY(KCET)

285293 The reaction quotient, ' $Q_{c}^{'}$ is useful in predicting the direction of the reaction. Which of the following is incorrect?

1 If

Q_{c} < K_{c}

, the reverse reaction is favoured.

2 If\(Q_c

3 If

Q_{c} > K_{c}

, forward reaction is favoured.

4 If

Q_{c} = K_{c}

, no reaction occur.

Karnataka CET 2017

CHEMISTRY(KCET)

285291 The relationship between $K_{p}$ and $K_{c}$ is $K_{p} = K_{c} (R T)^{Δ n} g$ . What would be the value of $Δ n$ for the reaction, ${NH}_{4} Cl (s) ⇌ {NH}_{3} (g) + HCl (g)$ ?

1 1

2 0.5

3 1.5

4 2

Explanation:

(d) $K_{p} = K_{c} (R T)^{Δ n g}$
$Δ n_{g} =$ sum of the stoichiometric coefficient of gaseous products - sum of stoichiometric coefficients of gaseous reactants
$Δ n_{g} = 2 - 0 = 2$

Karnataka CET 2018

CHEMISTRY(KCET)

285290 Solubility of AgCl is least in

1 0.1 M NaCl

2 pure water

0.1 M {BaCl}_{2}

0.1 M {AlCl}_{3}

Explanation:

(d) Concentration of common ion
$\propto \frac{1}{solubility}$
In $0.1 M {AlCl}_{3}$ , the concentration of common ion i.e., ${Cl}^{-}$ is high, therefore AgCl will be least soluble in this solution.

Karnataka CET 2019

CHEMISTRY(KCET)

2 \times 10^{- 4}

2 \times 10^{- 6}

2 \times 10^{- 10}

2 \times 10^{- 5}

Karnataka CET 2023

CHEMISTRY(KCET)

285283 A weak acid with ${pK}_{a} 5.9$ and weak base with ${pK}_{b}$ 5.8 are mixed in equal proportions. pH of the resulting solution is

1 7.005

2 7.5

3 7

4 7.05

Explanation:

$\begin{aligned} (d) pH = \frac{1}{2} {pK}_{w} + \frac{1}{2} {pK}_{a} - \frac{1}{2} {pK}_{b} \\ = \frac{1}{2} [{pK}_{w} + {pK}_{a} - {pK}_{b}] \\ = \frac{1}{2} (14 + 5.9 - 5.8) = 7.05 \end{aligned}$

Karnataka CET 2023