Complete the following: XeF 6 + 3 H 2 O →

Xenon hexafluoride on hydrolysis gives Xenon trioxide, hydrofluoric acid as the products. XeF 6 + 3 H 2 O → XeO 3 + 6 HF Xenon trioxide is a explosive compound.

Complete the following: XeF 2 + H 2 →

Xenon difluoride is a colourless, crystalline solid which melts at 129 ∘ C . Xenon difluoride react with hydrogen to give hydrogen fluoride and xenon. XeF 2 + H 2 → Xe + 2 HF It gives substitution reactions with strong protonic acids.

Draw the structure of H 2 SO 4 .

Sulphuric acid is an oxoacid of Sulphur. In this, sulphur is covalently bonded to two oxo groups and two hydroxyl groups in a tetrahedral shape. Bond angle is 109 . 5 ∘ . The electronic configuration of sulphur is 1 s 2 2 s 2 2 p 6 3 s 2 3 p 4 . All four electrons of sulphur are paired and sulphur has no lone pairs. The stucture of sulphuric acid is

Draw the structure of H 2 S 2 O 7 .

H 2 S 2 O 7 (Pyrosulphuric acid) is industrially known as oleum. The basicity of oleum is two. There are a total of four double bonds in the structure. We can see that four oxygen atoms are linked to sulphur by a double bond and the rest by a single bond.

How does SO 2 react with H 2 O and NaOH ?

SO 2 reacts with water to form sulphurous acid. Sulphurous acid is weakly dibasic acid. Sulphur dioxide is a major component of acid rain since it mixes with vapour in the atmosphere reacting to produce H 2 SO 4 . SO 2 + H 2 O → H 2 SO 3 When a solution of sodium hydroxide is treated with sulphur dioxide in aqueous medium, Na 2 SO 3 first precipitates as a yellow solid. SO 2 + 2 NaOH → Na 2 SO 3 + H 2 O

Give the principle involved in preparation of sulphur dioxide in the laboratory.

In laboratory, we can prepare sulphur dioxide by the action of dilute sulphuric acid on sulphites. Reaction of sodium sulphite and sulphuric acid gives sodium sulphate, water and sulphur dioxide. Na 2 SO 3 + H 2 SO 4 → Na 2 SO 4 + H 2 O + SO 2

Complete the following: NH 4 Cl aq + NaNO 2 aq →

In laboratory, dinitrogen or nitrogen gas can be obtained by the reaction of ammonium chloride and sodium nitrite. The reaction is as follows: NH 4 Cl ( aq ) + NaNO 2 ( aq ) → N 2 ( g ) + 2 H 2 O ( l ) + NaCl ( aq )

Complete the following: CaF 2 + H 2 SO 4 →

Calcium fluoride is a very sparingly soluble that is an insoluble salt. Insoluble salts also dissolve in strong acids like concentrated sulphuric acid. When concentrated sulphuric acid reacts with calcium fluoride, it forms hydrogen fluoride and calcium sulphate. CaF 2 + H 2 SO 4 → 2 HF + CaSO 4

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 7 - The p-Block Elements>Jharkhand Board-2020>Q 31

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12th Jharkhand Board

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Draw the structure of ${XeF}_{2}$ molecule.

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