Which element reacts spontaneously with 1.0 m hcl(aq) at room temperature?

Question

Which element reacts spontaneously with 1.0 m hcl(aq) at room temperature? (1) copper(2) gold (3) silver(4) zinc

Alphonso Olson · Accepted Answer

(4) zinc Zinc is higher in the activity series than hydrogen, copper, gold, and silver

Alphonso Olson · Answer

(4) Zinc is correct answer. Others don't react at room temperature with HCl because their reactivity (capability to react) is quite low.

Alphonso Olson · Answer

Answer is: (2) barium.Chemical reaction: Mg²⁺(aq) + Ba(s) → Mg(s) + Ba²⁺(aq).Reactivity seriesis an empirical progression of a series of metals, arranged by their reactivityfrom highest to lowest (alkaline metals have highest reactivity and Noblemetals lowest reactivity). This series are used to summarize information aboutthe reactions of metals with acids or water, double displacement reactions(more reactive metals displace metals with lower reactivity) and the extractionof metals from their ores. In this example, barium is more reactive than magnesium, iron, chromium and zinc are less reactive.

Alphonso Olson · Answer

The answer is (4) zinc. Zinc can react with HCl at room temperature spontaneously and create H2. You can know this property from the metal activity order.

Alphonso Olson · Answer

The complete answer contains the answer choices.This is the complete question:Atoms of which element react spontaneously with Mg2+(aq)? (1)chromium (2)barium (3)iron (4)zinc option 2. barium. Explanation.1) Mg ²⁺ (aq) is the aquous cation of the metal Mg.2) Only a metal more reactive than Mg will be able to exchange with it the oxidation states.3) Mg is an earth alkalyne metal (group 2 of the periodic table). The metals from this group are more reactive than the metals in the groups to its right: 3, 4, 5, 6, 7, ... Only the alkalyne metals (those in group 1) are more reactive than the earth alkalyne metals.4) Of the list, barium is the only alkalyne metal, so it is more reactive than Mg and will be able to deliver 2 electrons to transform the cations Mg²⁺ into Mg while the very Ba will become Ba²⁺.5) Chromium, iron and zinc are transition metals, so less metallic (reactive) than Mg.

Alphonso Olson · Answer

The complete answer contains the answer choices.This is the complete question:Atoms of which element react spontaneously with Mg2+(aq)? (1)chromium(2)barium(3)iron(4)zinc option 2. barium.Explanation.1) Mg ²⁺ (aq) is the aquous cation of the metal Mg.2) Only a metal more reactive than Mg will be able to exchange with it the oxidation states.3) Mg is an earth alkalyne metal (group 2 of the periodic table). The metals from this group are more reactive than the metals in the groups to its right: 3, 4, 5, 6, 7, ... Only the alkalyne metals (those in group 1) are more reactive than the earth alkalyne metals.4) Of the list, barium is the only alkalyne metal, so it is more reactive than Mg and will be able to deliver 2 electrons to transform the cations Mg²⁺ into Mg while the very Ba will become Ba²⁺.5) Chromium, iron and zinc are transition metals, so less metallic (reactive) than Mg.

Alphonso Olson · Answer

(4) zinc

Alphonso Olson · Answer

The correct answer is (4) zinc~According to the reactivity series of metals, only zinc react with HCl (aq) at room temperature.Hope this helps~

Alphonso Olson · Answer

Zinc will most likely react the fastest

Alphonso Olson · Answer

Option (4) is the correct answer.Explanation:According to the reactivity series, zinc is the most reactive as compared to hydrogen, silver and copper.Whereas hydrogen is more reactive than copper which is more reactive than silver.Therefore, we can conclude that out of the given options zinc is the element that reacts spontaneously with 1.0 M HCl(aq) at room temperature, is the correct option.

Lori Robel

Which element reacts spontaneously with 1.0 m hcl(aq) at room temperature?

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