FUTO Chemistry 2017/2018 - Model 2 Past Questions

What is the valence shell electron configuration of the element with atomic number 17?

The density of a certain gas is 1.98gdm3 at s.t.p. What is the molecular mass of the gas?

Consider the reaction represented by the following equation: $${Na_2CO_{3(aq)} + 2HCl_{(aq)} \rarr 2NaCl_{(aq)} + H_2)_{(l)} + CO_{2(g)}}$$. What volume of 0.02 moldm^-3 Na₂CO_3(aq) would be required to completely neutralize 40cm³ of 0.10moldm^-3 HCl?

Which of the following is used to study the arrangement of particles in crystal lattices?

During a titration experiment, 0.05 moles of carbon(IV) oxide is liberated. What is the volume of gas liberated?
[Molar volume of a gas at s.t.p. = 22.4 dm³]

A compound contains 40.0% C, 6.7% H and 53.3% O. If the molecular mass of the compound is 180, its molecular formula is
[C= 12, H = 1,0 = 16]

Ethanol reacts with concentrated tetraoxosulphate(VI) acid at a temperature above 170°C to form

10.0 dm³ of water added to 2.0 mol dm^-3 of 2.5 dm³ solution of HCI What is the concentration of the final solution in mol dm^-3?

2-methylbutan-2-ol is an axample of a

Commercial bleaching can be carried out using