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What number of moles of Cu 2+ will be deposited by 360 coulombs of electricity?
[f = 96500 C mol -1]
2\(Na_2O_{2(s)} + 2H_2O_{(1)}\)→ 4\(NaOH_{(s)} +O_{2(g)}\)
The substance that is oxidized in the reaction above is
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?