Question
A metal that reacts with WATER... will NEVER react with the AIR WILL NOT react with a DILUTE ACID WILL react with a DILUTE ACID MAY react with a DILUTE ACID
Answer
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(245 Votes)
Jonah
Master · Tutor for 5 years
Answer
In general, it can be stated, within reason, that:a. Hyper-reactive metals reacting with WATER showing high reactivity, yet those metals typically happen to REACT with the AIR as well. Saying a metal reacting with water will NEVER react with the air isn't typically right with periodic table norms. b. More often than not, a metal which will NOT react with a DILUTE ACID will be ones that DO NOT react with WATER as well, due to the element's lower reactivity. c. Any material showing high reactivity instances such as reacting with water WILL, as the most theorists agree with, react with a DILUTE ACID as it shows its reactivity with water.d. On more wider words there can be less reactive elements which MAY react with a DILUTE ACID following the occasion it reacts with water, but it will require more specific situations and reactivity. So this claim also stands correct in terms of reactivity.
Explanation
The question is about classifying metal reactivities with water and with air or dilute acid. Let's break it down:1) A metal that reacts with water is a highly reactive metal. Such metals include Alkali metals like Sodium or Calcium which can react with water even at room temperature. Reactions of these metals with water can be explosive and often produce flammable Hydrogen gas.2) Metals that react with water are generally reactive enough to also react with oxygen in the air. There aren't usually any metals reactable with water that won't react at all with the air. So it is quite rare to identify a material reacting with water and NEVER reacting with the air.3) As for reacting with a dilute acid, there is a ranking according to metal reactivity. Highly reactive metals such as alkali and alkaline earth metals tend to be more likely to react with dilute acids. Lessor reactive metals, would less likely react with dilute acids. In other words, if a metal "will not" react with a dilute acid, it means this metal has a low reactivity, at least towards acids, so it will not or less likely react with water either.4) At the same time, if a metal can react with water, saying it "will" or especially it "may" react with a dilute acid seems quite fair and safely accurate, as it is demonstrating its reactivity by reacting with water in the first place, which is quite a reactive quality already.