Arrhenius Theory of Acids and Bases

Q.

Which acid is present predominantly in a tomato?

1. Tartaric acid

2. Malonic acid

3. Oxalic acid

4. Lactic acid

Q.

What happens to acids when dissolved in water?

Q.

The acid present in tomato is_______.

Q.

Mention the bonds present in ${\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}$.

Q.

Write the equation for dissociation of hydrochloric acid (HCl) in water?

Q.

Which of the following is a weak base

1. $\mathrm{KOH}$

2. $\mathrm{NaOH}$

3. $\mathrm{Ca}{\left(\mathrm{OH}\right)}_2$

4. ${\mathrm{NH}}_4\mathrm{OH}$

Q.

Tomato is a natural source of which acid?

1. Acetic acid

2. Citric acid

3. Tartaric acid

4. Oxalic acid

Q.

Give reasons for the following :

(a) Sodium hydrogen sulphate is not an acid but it dissolves in water to give hydrogen ions, according to the equation

$NaHS{O}_4\rightleftharpoons H^{+}+N{a}^{+}S{O}_4^{2-}$

(b) Anhydrous calcium chloride is used in a desiccator.

Q.

An element is determined by the number of:

1. Electrons

2. Protons

3. Nucleons

4. Neutrons

Q.

Which of the following gives the correct increasing order of acidic strength?

1. Water < Acetic acid < Hydrochloric acid

2. Water < Hydrochloric acid< Acetic acid

3. Acetic acid< Water < Hydrochloric acid

4. Hydrochloric acid< Water< Acetic acid

Q. Which of the given species can act as both Bronsted and Lewis acid?

1. $C{u}^{2+}$
2. $S{O}_2$
3. $F{e}^{3+}$
4. $N{H}_4^{+}$

Q. Aluminium hydroxide is a tri acidic base. State true or false.

1. True
2. False

Q.

Which gas is released when hypochlorous acid is heated ?

1. hydrogen

2. chlorine

3. nitrogen

4. oxygen

Q.

Do the strength and concentration of an acid have the same significance?

Q.

The Chambal Valley Is An Example Of______. (A) Delta. (B) Estuary. (C) Badland. (D) Rift Valley.

Q. According to Lewis theory, the neutralization reaction involves the

1. transfer of proton(s) from a base to an acid
2. transfer of electron pair from an acid to a base
3. transfer of proton(s) from an acid to a base.
4. transfer of electron pair from a base to an acid

Q. Choose the correct statement according to the Lewis acid-base concept.

1. All anions are acids.
2. Molecules that have vacant d orbitals in the central atom act as acids.
3. All cations are bases.
4. Molecules with a complete octet of central atoms act as acids.

Q.

Identify Arrhenius acids and bases among the following:
$\begin{array}{cc}1.NaCl& 2.HCl\\ 3.Cu{\left(OH\right)}_2& 4.NaOH\\ 5.H_{2}S{O}_4& 6.HN{O}_3\\ 7.KOH& \end{array}$

1. 1, 2 and 5 are acids and 3, 4 and 7 are bases

2. 2, 3 and 5 are acids and 1, 4, 6 are bases

3. 4, 6 and 7 are acids and the rest are bases

4. 2, 5 and 6 are acids and 3, 4 and 7 are bases

Q.

What happens to the $H^{+}$ ion concentration, if an Arrhenius acid is added in water?

1. increases the concentration of

2. Decreases the concentration of

3. Increases the concentration of ​

4. decreases the concentration of

Q. What is meant by ionic product of water?

1. Concentrations of $H^{+}$ ions
2. Concentrations of $O{H}^{-}$ ions
3. The product of concentrations of $H^{+}$ and $O{H}^{-}$ ions
4. None of these

Q.

Identify the Arrhenius acids among the following:

1. NaCl 2. HCl 3. $Cu(OH{)}_2$ 4. NaOH

5. $H_{2}S{O}_4$ 6. $HN{O}_3$ 7. KOH

1. 2, 5 and 6

2. 1, 2 and 5

3. 2, 3 and 5

4. 4, 6 and 7

Q.

Take a small quantity of salt X in a test tube and add dil. $H_{2}S{O}_4$.The rotten egg smelling gas Y is evolved. The anion contains in the salt is:

1. SO₃^2-

2. S^2-

3. CO₃^2-

4. Cl^-

Q. Sodium hydroxide and calcium hydroxide are examples of acids.

1. True
2. False

Q. When compound X is dissolved in water, it dissociates as shown:
$X\to A+O{H}^{-}.$
Then X is:

1. Arrhenius base
2. Neutral
3. Cannot be determined
4. Arrhenius acid

Q.

What are five types of salts? Explain with examples. [5 MARKS]

Q.

Give the names and formulae of two strong acids and two weak acids.

Q.

According to Arrhenius theory, which of the given options is correct?

1. $H^{+}$ ions are accepted in solution by an acid.

2. $H^{+}$ ions are formed in solution by an acid.

3. $O{H}^{-}$ ions are formed in solution by an acid.

4. $O{H}^{-}$ ions are lost in solution by a acid.

Q. An Arrhenius acid is a substance that gives ions in an aqueous solution.

1. ${\text{OH}}^{-}$
2. ${\text{H}}^{+}$
3. ${\text{H}}^{-}$

Q.

According to Arrhenius, acid generates _____ ions in water.

1. ${\text{H}}^{+}$

2. ${\text{OH}}^{-}$

3. ${\text{Cl}}^{-}$

4. ${\text{F}}^{-}$

Q. According to Arrhenius, acid generates _____ ions in water.

1. ${\text{H}}^{+}$
2. ${\text{OH}}^{-}$
3. ${\text{Cl}}^{-}$
4. ${\text{F}}^{-}$