Reaction between water and metals

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SUMMARY

When metals react with water, reactive metals such as sodium (Na) and potassium (K) typically form hydroxides at room temperature, while less reactive metals like zinc (Zn) to copper (Cu) form oxides either over time or upon heating. The reactivity series indicates that metals in groups 1 and 2, along with aluminum (Al), readily react with water to produce hydroxides. In contrast, metals positioned after copper in the reactivity series exhibit minimal to no reaction with water. Understanding these reactions is crucial for predicting metal behavior in aqueous environments.

PREREQUISITES
  • Familiarity with the reactivity series of metals
  • Understanding of metal hydroxides and oxides
  • Knowledge of chemical reaction conditions (temperature, reactivity)
  • Basic chemistry concepts related to metal-water interactions
NEXT STEPS
  • Research the reactivity series of metals in detail
  • Study the formation and properties of metal hydroxides
  • Explore the conditions under which metals react with water
  • Investigate the thermal stability of metal oxides
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Chemistry students, educators, and professionals interested in metal reactivity and chemical reactions involving water.

Addieyo
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1. When reacting metals with water, under what conditions do you get hydroxide and under what conditions do you get oxide?

3. is it all reactive metals like Na and K form hydroxides and non-reactive ones form oxides?

Can anyone tell me the details of the reasons for such difference?
 
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You are right - almost all the reactive metals form hydroxides, but some non-reactive do not form metal oxides at all. Also bear in mind that some metals only react at hign temperatures.
You can in general predict how metals react with water according to the potentials:
http://en.wikipedia.org/wiki/Reactivity_series - those before Zn (groups 1 and 2 metals and Al) react at room temperature and form hydroxides while metals from Zn to Cu react slowly and form oxides either with time or at heating. Metals after Cu hardly react with water directly.
 

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