The oxidation state of oxygen in tetraoxosulphate (VI) acid is
The oxidation state of oxygen in tetraoxosulphate (VI) acid is A. -4 B. -2 C. +4 D. -8…
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Dissolving some pellets of NaOH in water would result in
Dissolving some pellets of NaOH in water would result in A. a decrease in the free energy of…
Calculate the number of moles of HCl present in 20cm3 of a 0.75M solution of…
Calculate the number of moles of HCl present in 20cm3 of a 0.75M solution of the acid A.…
tartaric acid is used industrially to
tartaric acid is used industrially to A. make baking powder B. make fruit juices C. remove rust D.…
The salt formed from strong acid and a strong base is
The salt formed from strong acid and a strong base is A. complex B. neutral C. basic D.…
What happens when zinc rod is immersed in copper (II) tetraoxosulphate (VI) solution/
What happens when zinc rod is immersed in copper (II) tetraoxosulphate (VI) solution/ A. The blue colour of…
C2H4(g) + H2(g) → C2H6(g) ΔH = -137kJ mol-1 The reaction represented above is
C2H4(g) + H2(g) → C2H6(g) ΔH = -137kJ mol-1 The reaction represented above is A. exothermic B. spontaneous…
How long would it take to deposit 0.08g of copper from CuCl2 solution by passing…
How long would it take to deposit 0.08g of copper from CuCl2 solution by passing a current of…
H3PO4(aq) + H2O(l) ↔ H2PO4-(aq) + H3O+(aq) ΔH = -13kJ at 298K In the reaction…
H3PO4(aq) + H2O(l) ↔ H2PO4–(aq) + H3O+(aq) ΔH = -13kJ at 298K In the reaction above, an increase…
The reaction that takes place in Daniell cell is
The reaction that takes place in Daniell cell is A. direct combination B. redox C. double decomposition D.…