Hydronium Ion

Q.

What is the pH of Baking Soda and Vinegar?

Q.

Dilute sulphuric acid splits into

1. Oxygen ons and hydrogen ions

2. Oxygen ions, hydrogen ions and sulphur ions

3. Hydrogen ions, oxygen ions and sulphate

4. Hydrogen ions and sulphate ions

Q.

Define the term pH .

Q. Give reason for the following:​
The end of the thistle funnel should be dipped in acid.​

Q. From the given options, select the one with the highest pH value.

1. $HCl$
2. $KOH$
3. $H_{2}S{O}_4$
4. $H_{2}O$

Q. What do you understand by hydrolysis? Explain giving examples.

Q.

Strongest hydrogen bond is present in

1. $\mathrm{H}-\mathrm{O}\dots \dots \dots \mathrm{H}-\mathrm{O}$

2. $\mathrm{H}-\mathrm{N}\dots \dots \dots \mathrm{H}-\mathrm{N}$

3. $\mathrm{H}-\mathrm{F}\dots \dots \dots \mathrm{H}-\mathrm{F}$

4. $\mathrm{H}-\mathrm{Cl}\dots \dots \dots \mathrm{H}-\mathrm{Cl}$

Q. If $H^{+}$ ion concentration of a solution is increased by $10$ times, its $pH$ will :

1. increase by one
2. remains unchanged
3. decrease by one
4. increase by $10$

Q. $H^{+}$ ions are obtained by the ionisation of acids.

1. True
2. False

Q. Equal volumes of hydrochloric acid and sodium hydroxide solutions of same concentration are mixed and the pH of the resulting solution is checked with a pH paper. What would be the
colour obtained? (You may use colour guide given in your text book)

1. Yellowish green
2. Blue
3. Yellow
4. Red

Q.

At certain temperature the value of pKw is 13.4 and the measured ph of a solution is 7. the solution is (a) acidic (b)basic (c) neutral (d)unpredictable

Q. A/An ________ solution contains both $H^{+}$ and $O{H}^{-}$ ions.

1. acidic
2. all of the above
3. neutral
4. basic

Q. While dilution, water is added to the acid.

1. True
2. False

Q. $0.90gm$ of the acid (molecular weight $90gm$) is neutralized by $40mL$ of $0.5NNaOH$. What is the basicity of the acid?

1. $2$
2. $3$
3. $4$
4. $1$

Q. Name the ion(s) obtained when $HCl$ dissociates in aqueous solution.

1. $H_3{O}^{+}$
2. ${Cl}^{-}$
3. Both $A$ and $B$
4. None of these

Q.

Water is liquid at room temperature due to weak hydrogen bonds.

1. True
2. False

Q. While dilution, water is added to the acid.

1. True
2. False

Q. A basic solution has a pH of approximately:

1. more than 7
2. less than 7
3. between 4 to 5
4. equal to 7