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The situation obtained when a perfect gas expands into a vacuum is
3H\(_{2(g)}\)+ N\(_{2(g)}\)⇔ 2NH\(_{3(g)}\) ; H= -ve
In the reaction above, lowering of temperature will
Sieving is a technique used to separate mixtures containing solid particles of
If the molecular mass of tetraoxosulphate (VI) acid is 98, calculate its vapour density.
Which of these alloys contains copper?
Calculate the percentage composition of oxygen in calcium trioxocarbonate(IV) [Ca=40, C=12, O=16]
The ionic radii of metals are usually
In electrovalency, the oxidation number of the participating metal is always
The derivative of benzene that can be used in making explosives is
During the electrolysis of copper II sulphate between platinum electrodes, if litmus solution is added to the anode compartment
Elements P, Q, R, S have 6, 11, 15, 17 electrons respectively, therefore,
Which of the following metals cannot replace hydrogen from water or steam?
The conductivity of an acid solution depends on the
Which of these sources of water may likely contain the least concentration of Ca\(^{2+}\) and Mg\(^{2+}\)?
Aluminium does not react with either dilute or concentrated trioxonitrate (V) acid because
The presence of ammonia gas in a desiccator can exclusively be removed by
The collision theory explains reaction rates in terms of
The end products of burning a candle in the atmosphere are water and
2SO\(_2\) \(_{(g) }\)+ O\(_2\) \(_{(g) }\) ↔ 2SO\(_3\)\(_{(g) }\) ΔH = -395.7kJmol\(^{-1}\)
In the equation, an increase in temperature will shift the equilibrium position to the
The hydrogen ion concentration of a sample of orange juice is 2.0 X 10\(^{-11}\)moldm\(^{-3}\). What is its p\(^{OH}\)? [log102 = 0.3010]