2008
Which listed force attracts separate non-polar covalent molecules to one another?
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2008 WAEC SSCE Chemistry Past Questions
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2008
Water molecules are held together by
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2008
When concentrated H2SO4 is added to NaCl(s), the gas evolved
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2008
In a fixed volume of a gas, an increase in temperature results in an increase in pressure due to an increase in the
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2008
Which of the following gases has the lowest rate of diffusion under the same conditions of temperature and pressure? [H = 1, O = 16, Ne = 20, Cl = 35]
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2008
Consider the reaction represented by the following equation: Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) what volume of hydrogen gas is produced at s.t.p. when 3.25 g of zinc reacts with excess dilute HCl? [Zn = 65, Molar gas v…
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2008
If 5.00cm3 of 0.20 mol dm-3Na2CO3 was diluted with distilled water to obtain 250 cm3 solution, what is the concentration of the resulting solution?
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2008
An aqueous solution of CaCl2 is
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2008
The colour of phenolphthalein indicator in dilute nitric acid, HNO3, is
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2008
Which of the following set of equations could be used to represent the standard enthalpy of formation of glucose?
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2008
Diamond does not conduct electricity because it
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2008
The collision theory proposes that
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2008
Consider the equilibrium reaction represented by the equation: 2SO2(g) + O2(g) ⇌ 2SO3(g) ∆H = - 197 kJmol-1. At equilibrium, the gas mixture is compressed by reducing its volume while keeping its temperature constant. Th…
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2008
The high solubility of ethanol in water is due to its
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2008
When 100 cm3 of a saturated solution of KClO3 at 40 °C is evaporated, 14 g of the salt is recovered. What is the solubility of KClO3 at 40 °C? [KClO3 = 122.5]
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2008
Consider the reaction represented by the question below: KOH(aq) + HCI(aq) → KCI(aq) + H2O(l) What volume of 0.25 mol dm-3 KOH would be required to completely neutralize 40 cm3 of 0.10 mol dm -3 HCI?
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2008
Which of the following compounds would dissolved in water to give a solution whose pH is less than 7?
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2008
Which of the following compounds would not give a precipitate with ammoniacal AgNO3 solution?
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2008
A mixture of kerosene and diesel oil can be separated by
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2008
Calculate the quantity of electricity passed when 0.4 A flows for 1 hour 20 minutes through an electrolytic cell
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