Sodium halide salts react with concentrated sulfuric acid at room temperature.

1. (a)(i)Write an equation to represent the reaction of NaCl(s) with concentrated sulfuric acid.[1]
2. (a)(ii)Name this type of reaction.[1]
3. (b)(i)NaI(s) reacts with concentrated sulfuric acid, at room temperature, to form steamy fumes. Identify the chemical responsible for the steamy fumes.[1]
4. (b)(ii)The reaction of NaI(s) with concentrated sulfuric acid continues, forming several other products, including a dark grey solid. Identify the chemical responsible for the dark grey solid and one other product of this further reaction. dark grey solid other product[2]
5. (c)Explain the differences in observations, at room temperature, when NaI(s) reacts with concentrated sulfuric acid compared to those for NaCl(s).[2]
6. (d)Complete the equation for the reaction of Br⁻ with excess concentrated H₂SO₄ at room temperature. ......Br⁻ + ......H⁺ + .H₂SO₄ →[1]