1.

A metal 'x' available in the form of ribbons burn in air with a dazzling white light, once heated to its ignition temperature. It leaves a white powder 'y' which dissolves in water. The solution so formed turns red litmus blue. Identify 'x' and 'y' and write the balanced chemical equation of the reaction.

Answer»

Magnesium ribbon burns with dazzling white light, once treated to its ignition temperature. The white powder formed is Magnesium oxide which dissolves in water to give a basic solution which turns red litmus blue. Thus 'x' is Mg and 'y' is MgO.

2MgO+O2  2MgO

MgO+H2 Mg(OH)2



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