Metals that do not react with cold water but with hot steam: Mg,Al, Zn, Cr, etc.
Metals that neither react with cold water nor with hot steam,but with acids: Co, Ni, Sn, Pb, etc. These reactivity-patterns ofthe metals listed above are in line with the metal'sreactivity-trend described in Question #1 above. For instance,since K is more reactive than Al (again according to the trenddescribed in Question #1), K can easily react even with cold water.However, Al can't react with cold water; Al can only react with hotsteam because Al is less reactive than K. You can also draw asimilar reasoning if you compare, for instance, Al with Pb. Al canreact with hot steam. However, Pb can't react with hot steam; Pbcan only react with acids (i.e. only with such chemicals as acids!)because Pb is less reactive than Al. The following two picturesshow the reactions of sodium (Na) and magnesium (Mg) with H2O. Thetop picture (a) shows a greater (faster) extent of reaction withH2O than the bottom picture (b).
- The Following Are Examples Of Reactivity Patterns Of Some Metals Metals That React With Cold Water Li K Na Ca Etc 1 (528.48 KiB) Viewed 18 times
2. What state is the H2O in each case, i.e., cold water or hotsteam?
(a) (b)