Reactivity with Dihydrogen (Group 1)

Q.

Which of the following salts is the most basic in aqueous solution?

1. ${\mathrm{CH}}_3\mathrm{COOK}$

2. ${\mathrm{FeCl}}_3$

3. $\mathrm{Pb}{\left({\mathrm{CH}}_3\mathrm{COO}\right)}_2$

4. $\mathrm{Al}{\left(\mathrm{CN}\right)}_3$

Q.

Phenolphthalein gives _________ colour with lime water.

Q.

Look at the following reaction:
$LiH+Al{H}_3⟶LiAl{H}_4$

Here $Al{H}_3$ and $LiH$ act as:

1. Lewis acid and Lewis base

2. Lewis base and Lewis acid

3. Bronsted base and Bronsted acid

4. None of these

Q. Why is anhydrous $CaC{l}_2$ used in a desiccator? Name one substance that is 'efflorescent'.

Q. Why is anhydrous $CaC{l}_2$ used in a desiccator? Name one substance that is 'efflorescent'.

Q. (a) List three properties of ionic compounds.
(b) Show the formation of $NaCl$ by transfer of electron
(c) How is it that ionic compounds in the solid state do not conduct electricity but they do so when in molten state?

Q.

why MgSO4 soluble in water whereas BaSO4 is insoluble in water?