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What is the concentration of a solution containing 2g of NaOH in 100cm3 of solution?
[Na = 23, O = 16, H = 1]
Which of the following properties is NOT peculiar to matter?
From the diagram above, an ideal can be represented by
Which of the following questions is correct about the periodic table?
The relative atomic mass of a naturally occurring lithium consisting of 90% 73Li and 6310% Li is
An isotope has an atomic number of 15 and a mass number of 31. The number of protons it contain is
The molecular lattice of iodine is held together by
The arrangement of particles in crystal lattices can be studied using
From the diagram above, find the amount of solute deposited when 200 cm3 of the solution is cooled
from 55°C to 40°C.
The importance of sodium aluminate (III) in the treatment of water is to
What type of bond exits between an element X with atomic number 12 and Y with atomic number 17?
Hardness of water is mainly due to the presence of
A suitable solvent for iodine and nephthalene is
Which of the following noble gases is commonly found in the atmosphere?
N2O4(g) <—> 2NO2(g) ΔH = +ve
In the reaction above, an increase in temperature will
CH3COOH(aq) + OH-(aq) <–> CH3COO-(aq) + H2O(l)
In the reaction above ,CH3COO-(aq) is
How many cations will be produced from a solution of potassium aluminium tetraoxosulphate (VI)?
Which of the following is NOT an alkali?
An effect of thermal pollution on water bodies is that the
Which of the following is a deliquescent compound?
A chemical reaction which the hydration energy is greater than the lattice energy is referred to as
The function of zinc electrode in a galvanic cells is that it
CH4(g) + Cl2(g) → CH3 Cl(s) + HCl(g)
The major factor that influence the rate of the reaction above is
The condition required for corrosion to take place is the presence of
The diagram above best illustrates the effect of decrease in
MnO-4(aq) + Y + 5Fe2+(aq) → Mn2+(aq) + 5Fe3+(aq) + 4H2O(l)
In the equation above, Y is
Given that M is the mass of a substance deposited during electrolysis and Q is the quantity of electricity consumed, then Faraday's first law can be written as
The impurities formed during the laboratory preparation of chlorine gas are removed by
The effect of the presence of impurities such as carbon and sulphur on iron is that they
A few drops of concentrated HNO3 is added to an unknown solution and boiled for a while. If thisproduces a brown solution, the cation present is likely to be
The bleaching action of chlorine gas is effective due to the presence of
In the laboratory preparation of oxygen, dried oxygen is usually collected over
The property of concentrated H2SO4 that makes it suitable for preparing HNO3 is its
Bronze is preferred to copper in the making of medals because it
The constituents of baking powder that makes the dough to rise is
The ability of carbon to form long chains is referred to as
Which of the following compounds will undergo polymerization reaction?
The compound above exhibits
An organic compound has an empirical formula CH2O and vapour density of 45.
What is the molecular formula?
[C = 12, H = 1, O = 16]
At 25o and zymase as catalyst,
C6H126 → 2C2H5OH + 2CO2 + energy
The reaction above represented by the equation above is useful in the production of
The number of isomers that can be obtained from C4H10 is
The functional groups present in the compound above are
Two organic compounds K and L were treated with a fewdrops of Fehling's solutions respectively . K formed a brick-red precipitate while L, remains unaffected. The compound K is an
Which of the following statements is true about 2-methylpropane and butane
what kind of reaction is this with conc H2SO4 as catalyst
CH3COOH + C2H5OH → CH3COOC2H5 + H2O
In the diagram above , X is the “
The compound above exhibits
choose the correct answer in the option above. Which of the following is a primary amine?
The compound that is used as an anaesthetic is
The most common ore of iron include