Chemistry
Give a reason why metals are arranged in a series called - 'activity series of metals'. Name a metal which reacts with
(a) Cold water
(b) Boiling water
(c) Steam
to liberate hydrogen in each case.
Answer
Depending upon the reactivity of metals with water, they are arranged in a series called - 'activity series of metals' in a way such that the most reactive metal is at the top of the series, and the least reactive at the bottom.
(a) Potassium (K)
(b) Magnesium (Mg)
(c) Iron (Fe)
Related Questions
Differentiate between an efflorescent, deliquescent & hygroscopic substance with suitable examples.
Differentiate the function of concentrated sulphuric acid as a drying agent & as a dehydrating agent. Is fused calcium chloride a dehydrating or a desiccating agent. Give reasons.
Differentiate between -
(a) Hard & soft water
(b) Temporary & permanent hard water
with examples.
Give balanced equations to show how -
(a) Temporary hardness enters into water.
(b) Temporary hardness in water can be removed by boiling.
(c) Permanent hardness in water can be removed by addition of washing soda.