In the treatment of domestic water supplies, chlorine is added to the water to form HClO. Cl₂(aq) + H₂O(l) → H⁺(aq) + Cl⁻(aq) + HClO(aq) The HClO reacts further to give ClO⁻ ions. HClO(aq) + H₂O(l) ⇌ H₃O⁺(aq) + ClO⁻(aq) Both HClO and ClO⁻ kill bacteria by oxidation. What is the change in oxidation number of chlorine when forming the ClO⁻ ion from aqueous chlorine?

In which reactions is the underlined element or compound reduced? 1 NaClO + H₂O₂ → O₂ + NaCl + H₂O 2 2NH₃ + 2Li → 2Li…

In the redox reaction shown, how do the oxidation states of vanadium and sulfur change? VO2+ + SO2 → V3+ + SO42-

When the equation is correctly balanced, what is the value of c? aC2H4 + bH2O + cH+ + 2MnO4- → dC2H6O2 + eMn2+

River water in a chalky agricultural area contains Ca²⁺, Mg²⁺, CO₃²⁻, HCO₃⁻, Cl⁻ and NO₃⁻ ions. In a water treatment …

After black and white photographic film has been developed, unreacted silver bromide is removed by reaction with sodi…

But-2-ene-1,4-diol is converted in two steps through an intermediate X into oxobutanedioic acid. HOCH₂CH=CHCH₂OH but-…