N2O2
NO
NO2
N2O
N2O3
Correct answer is C
No explanation has been provided for this answer.
Sulphur hydrogen
Hydrogen oxygen
Oxygen Hydrogen
Hydrogen sulphate ions
Sulphur oxygen
Correct answer is C
Dissociation of sulfuric acid,
\(H_2SO_4→2H^+_{(aq)}+SO^{−2}_{4(aq)}\)
Dissociation of water,
\(H_2O→H^+_{(aq)} + OH^−_{(aq)}\)
At Anode : \(4OH^−→2H_2O_{(l)} + O_{2(g)} + 4e_{−}\)
At Cathode : \(2H^+_{(aq)} + 2e^− → H_{2(g)}\)
66
33
10
20
30
Correct answer is E
solubility = \(\frac{solute x 100}{solvent}\)
The solubility of KClO3 at 66oC will be \(\frac{12}{40} \times \frac{100}{1}\)
= 30
the solution will give out chlorine gas and hydrogen chloried gas
the solution will produce chlorine gas and oxygen
the solution will give out solution will producing hypochloric acid
the solution is decomposed giving out oxygen, hydrogen and chlorine
the solution will give out oxygen gas leaving behind aqueous hydrochloric acid
Correct answer is E
No explanation has been provided for this answer.
When ammonium, potassium and calcium carbonates are each separately heated
none of them will decompose
each of them will decompose to give carbondioxide and the respective oxide
ammonium carbonate and potassium carbonate will not decompose
only ammonium carbonate and the respective oxide
ammonium carbonate will decompose to give carbondioxide, water and ammonia
Correct answer is E
Solid ammonium carbonate decomposes as it is heated.
(NH4)2CO3 → 2 NH3 + CO2 + H2O