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Define oxidation in terms of (i) electron transfer, (ii) change in oxidation number
(2014)
When crystals of ammonium dichromate [(NH4)2Cr2O7] are heated strongly, they decompose fully according to the following balanced equation.
The Earth’s human population is now estimated at 7 billion (7 × 109 ) and is expected to increase to between 8.3 and 10.9 billion by 2050.
Many solid materials are classified as ionic, molecular, covalent or metallic crystals. Their properties can often be explained in terms of their crystal structures
Sodium thiosulfate is a reducing agent that reacts with iodine according to the following balanced equation
(2015)
