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The number of hydroxonium ions produced by one molecule of an acid in aqueous solution is its
Which of the following will produce a solution with pH less than 7 at equivalent point?
Which of the following pollutants is associated with brain damage?
Potassium trioxochlorate (V)has a solubility of 1.5 mol dm -3 at 45 oC.On cooling this solution to a temperature of 20 oC, the solubility was found to be 0.5 mol dm -3. What mass of KCIO 3 was crystalized out?
[K = 39, Cl = 35.5 O =16]
I. It has a varied composition from one place to another. ll. it constituents can be separated by physical means
lll. It contains unreactive noble gases
which of the above shows that air is a mixture?
A hydrogen atom which has lost an electron contains
If the elements X and Y have atomic numbers 11 and 17 respectively, what type of bond can they form?
50 cm\(_3\) of gas was collected over water at 10ºC and 765 mm Hg. Calculate the volume of the gas at s.t.p. if the saturated vapour pressure of water at 10ºC is 5mm Hg
Which of the following methods can be used to obtain pure water from a mixture of sand, water and methanoic acid?