Given that the order of reactivity of four metals is P>Q>R>S, which of the following reactions is feasible? Posted on:
A concentrated solution containing H+, Cu2+,OH- and CI- was electrolysed using platiunm electrodes which of the ions will be discharged at the cathodes? Posted on:
Which of the following substances decomposes when an electric current is passed through it? Posted on:
What is oxidized in the reaction represented by the following equation? 3CU + 8HN O3 → 3Cu(NO3)2 + 2NO + 4H2O Posted on:
A reaction is represented by the equation below. A2(g) + B2(g) 2AB(g); ∆H = +X kJmol-1 Which of the following statements about the system is correct? Posted on:
Consider the following equation: Ag+ (aq) + CI-(aq) → Ag+CI- (s) ; ∆H = _65.7 kJmol-1. From the equation, it can be deduced that Posted on:
What does ∆H represent in the following equation ? Cl(g) + e- → CI- ( g); ∆H = – 363 kJ mol-1 Posted on:
A gas was evolved when a sample of gastric juice reacted with sodium trioxocarbonate (IV) . The gas evolved was Posted on:
In which of the reactions represented by the following equations is HNO3 behaving as a typical acid? Posted on:
Which of the following would dissolve in warm dilute H2SO4 without effervescence, to give a blue solution? Posted on:
