Q13 / 160 · TS EAMCET 2024 (10 May Shift 1) · Chemistry
Choose the correct statements from the following
(I) In vapour phase $\mathrm{BeCl}_2$ exists as chlorobridged dimer
(II) $\mathrm{BeSO}_4$ is readily soluble in water
(III) BeO is completely basic in nature
(IV) $\mathrm{BeCO}_3$ being unstable, is kept in the atmosphere of $\mathrm{CO}_2$
(v) $\mathrm{BeCO}_3$ is less soluble among all the carbonates of group 2 elements
- Correct answerAII, III, IV
- BI, II, IV
- CI, IV, V
- DII, III, V
Solution
$\mathrm{BeCO}_3 \xrightarrow{\Delta} \mathrm{BeO}+\mathrm{CO}_2$
When $\mathrm{BeCO}_3$ kept in the atmosphere of $\mathrm{CO}_2$ so decomposition decrease thus stability increase. - Solubility of carbonates of alkaline earth metal decreases with increase in atomic number of metal. - Aqueous solution of oxide of alkaline earth metal are basic in nature but BeO is amphoteric in nature.
When $\mathrm{BeCO}_3$ kept in the atmosphere of $\mathrm{CO}_2$ so decomposition decrease thus stability increase. - Solubility of carbonates of alkaline earth metal decreases with increase in atomic number of metal. - Aqueous solution of oxide of alkaline earth metal are basic in nature but BeO is amphoteric in nature.
Hence, the correct answer is option: 'A'.