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liubo4ka [24]
3 years ago
9

Based on the equations below, which metal is the most active? pb(no3)2 (aq) + ni (s) â ni(no3)2 (aq) + pb (s) pb(no3)2 (aq) + ag

(s) â no reaction cu(no3)2 (aq) + ni (s) â ni(no3)2 (aq) + cu (s)
Chemistry
1 answer:
erastova [34]3 years ago
3 0

Answer is: nickel (Ni) is the most active metal.

Chemical reaction 1: Pb(NO₃)₂(aq) + Ni(s) → Ni(NO₃)₂(aq) + Pb(s).

Chemical reaction 2: Pb(NO₃)₂(aq) + Ag(s) → no reaction.

Chemical reaction 3: Cu(NO₃)₂(aq)) + Ni(s) → Ni(NO₃)₂(aq) + Cu(s).

From chemical reactions 1 and 3, we can conclude that nickel is more reactive than lead (Pb) and copper (Cu), because lead is more reactive than silver (Ag), chemical reaction 2, nickel is also more reactive than silver.

In chemical reaction 2, no reaction occurs because silver is less reactive than lead. Lead is higher in activity series of metals and can not be reduced.

Nickel is higher in activity series of metals than lead, copper and silver.

The activity series is a series of metals from highest to lowest reactivity. Metal higher in the reactivity series will displace another.

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Calculate the empirical formula of a compound that has a composition of 5.9% (by mass) hydrogen and 94.1% (by mass) oxygen.​
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Answer:

The empirical formula is the simplest form;

Given:

Oxygen O at 94.1% and

H at 5.9%

Assume 100grams.

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There is one mole of O for each mole of H so the empirical formula is O_1H_1

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8 0
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In many species, a transition metal has an unusually high or low oxidation state. Write balanced equations for the following and
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When `CO_(2)` is bubbled through a cold pasty solution of barium peroxide in water, `H_(2)O_(2)` is obtained. <br> `BaO+CO_(2)+H_(2)OtoBaCO_(3)+H_(2)O_(2)` Barium carbonate being insoluble is filtered off. This is known as Merck's process.

<h3>What is meant by Perhydrol?</h3>

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<h3>What is Merck's Perhydrol?</h3>

Uses: Perhydrol is used as an antiseptic for wounds, and also acts as a germicide to kill bacteria and germs.

Being a strong oxidizing agent it has bleaching properties and acts as a ripening agent.

Learn more about merck's process here:

<h3>brainly.com/question/16856280</h3><h3 /><h3>#SPJ4</h3>

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PLEASE HELP
DENIUS [597]

I believe that it is B

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3 years ago
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