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In the electrolysis of CuSO4(aq) using copper electrodes, the reaction at the anode is
Given that the order of reactivity of four metals is P>Q>R>S, which of the following reactions is feasible?
A concentrated solution containing H+, Cu2+,OH- and CI- was electrolyzed using platinum electrodes which of the ions will be discharged at the cathode?
Which of the following substances decomposes when an electric current is passed through it?
What is oxidized in the reaction represented by the following equation? 3CU + 8HNO3 → 3Cu(NO3)2 + 2NO + 4H2O
What is the oxidation number of nitrogen in Al(NO\(_3\))\(_3\)?
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?
Consider the following equation: Ag+ (aq) + CI-(aq) → Ag+CI- (s) ; ∆H = - 65.7 kJmol-1. From the equation, it can be deduced that
What does ∆H represent in the following equation ? Cl(g) + e- → CI- (g); ∆H = - 363 kJ mol-1
It can be concluded that gastric juice
A gas was evolved when a sample of gastric juice reacted with sodium trioxocarbonate (IV) . The gas evolved was
In which of the reactions represented by the following equations is HNO3 behaving as a typical acid?
Which of the following would dissolve in warm dilute H2SO4 without effervescence, to give a blue solution?
A mixture of calcium chloride and calcium trioxocarbonate (IV) in water can be separated by
Which of the following pairs of reagents react to produce hydrogen?
P\(_{TOTAL}\) = P\(_1\) + P\(_2\) + P\(_3\) + ...Pn' where P Total is the pressure of a mixture of gasses. The equation above is an expression of
Which of the following statements about ideal gases is/are correct? 1. The cohesive forces between their particles are negligible ll. They have no definite volume but occupy the volume of their containers III. They are not compressible IV. Their particles collide with loss of energy
Which of the following features of a human skeleton can be determined by carbon-dating?
A sheet of paper is placed in the path of a beam from a radioactive source. The emissions that pass through the paper consist of
Which of the following compounds is covalent?