Group IV (Group 14)

J is either $\text{MgCl}_2$ or $\text{AlCl}_3$.

K is either $\text{SiO}_2$ or $\text{SiCl}_4$.

Which row is correct?

Options

Which statement correctly describes what happens when silicon tetrachloride is added to water?

Options

A   The $\text{SiCl}_4$ dissolves to give a neutral solution only.
B   The $\text{SiCl}_4$ reacts to give an acidic solution only.
C   The $\text{SiCl}_4$ reacts to give a precipitate and an acidic solution.
D   The $\text{SiCl}_4$ reacts to give a precipitate and a neutral solution.

Which row describes the structure and bonding of $\text{SiO}_2$ and $\text{SiCl}_4$?

Options

Silicon is heated in an excess of chlorine, producing compound J.

An excess of water is added to the sample of J produced.

Which row is correct?

Options

$\text{NH}_3(\text{aq})$ is added to separate samples of $\text{NaCl(aq)}$, $\text{MgCl}_2(\text{aq})$, $\text{BaCl}_2(\text{aq})$ and $\text{SiCl}_4(\text{l})$. Under the conditions of this experiment, only two samples will produce a white precipitate when $\text{NH}_3(\text{aq})$ is added.

What are these two samples?

Options

A   $\text{MgCl}_2(\text{aq})$ and $\text{BaCl}_2(\text{aq})$
B   $\text{MgCl}_2(\text{aq})$ and $\text{SiCl}_4(\text{l})$
C   $\text{NaCl(aq)}$ and $\text{BaCl}_2(\text{aq})$
D   $\text{NaCl(aq)}$ and $\text{SiCl}_4(\text{l})$

Which observations are made when a sample of silicon chloride, $\text{SiCl}_4$, is added to a beaker of water?

Options

A   No visible change is observed.
B   Steamy fumes and a precipitate are both observed.
C   The appearance of a precipitate is the only observation.
D   The appearance of steamy fumes is the only observation.

A sample of $\text{SiCl}_4$ is added to cold water.

Which statement describes the mixture formed at the end of the reaction?

Options

A   acidic solution with no precipitate
B   acidic solution with white precipitate
C   neutral solution with no precipitate
D   neutral solution with white precipitate

Silicon forms a tetrachloride, $\text{SiCl}_4$.

Which statements are correct?

1. In $\text{SiCl}_4$, the Si is $\delta+$ and each Cl is $\delta-$.
2. $\text{SiCl}_4$ is a liquid at room temperature.
3. $\text{SiCl}_4$ reacts with water to give an acidic solution and a precipitate.

Options

A   1, 2 and 3 are correct
B   1 and 2 only are correct
C   2 and 3 only are correct
D   1 only is correct

Silicon is heated in an excess of chlorine, producing compound J.

Excess water is added to the sample of J produced.

Which row is correct?

Options

Which observations are made when a sample of silicon chloride, $\text{SiCl}_4$, is added to a beaker of water?

Options

A   No visible change is observed.
B   Steamy fumes and a precipitate are both observed.
C   The appearance of a precipitate is the only observation.
D   The appearance of steamy fumes is the only observation.