Which ion is most easily reduced?(l ) Zn2+ (2) Mg2+ (3) Co2+ (4) Ca2+
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The ion which is most easily reduced is the cobalt (II) ion(Co²⁺).
What is reduced species?
Reduced species are those species which itself gets reduced by the addition of electrons in it, and known as the oxidizing agents as it helps in the oxidation reaction.
Among the given species according to the electrochemical seriesstrength of the metals as oxidizing agent increases in the following manner:
Ca²⁺ < Mg²⁺ < Zn²⁺ < Co²⁺
So, Co²⁺ is most easily reduced as compared to others.
To know more about oxidizing agents, visit the below link:
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Which of the following circumstances will result in a reaction that is spontaneous only at low temperatures?A.) positive enthalpy change and positive entropy change B.) negative enthalpy change and negative entropy change C.) positive enthalpy change and negative entropy change D.) negative enthalpy change and positive entropy change
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Arrhenius acids are substances which produces hydrogen ions in solution, Arrhenius bases are substances which produces hydroxide ions in solution. A Bronsted-Lowry acid is a proton donor (usually hydrogen ion). And a Bronsted-Lowry base is a proton acceptor (usually hydrogen ion). Consider a chemical reaction between HCl and NaOH. We have the reaction HCl + NaOH à NaCl + H2O. The hydroxide ions in the NaOH are bases because they accept hydrogen ions from acids to form water. And an acid produces hydrogen ions in solution by giving a proton to the water molecule. Therefore, the answer is d. a Bronsted-Lowry base.
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if ur looking for 2 options
Answer:B & D
Explanation:
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Answer : The number of moles of sulfur present in sample are, 7.343 moles
Solution : Given,
Mass of sulfur = 232 gram
Molar mass of sulfur = 32 g/mole
Formula used :
Therefore, the number of moles of sulfur present in sample are, 7.343 moles
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The reaction between C2H6 and Cl2 by addition is C2H4Cl2 or dichloroethane. It must be under the presence of sunlight because halogen such as chlorine cannot easily react with the sigma bond of alkane such as ethane.
Answer:
addition
Explanation:
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Answer:
moist air is less dense than dry air because water has a lower molecular weight than nitrogen and oxygen
Answer:
Water vapor is a relatively light gas when compared to diatomic Oxygen and diatomic Nitrogen. Thus, when water vapor increases, the amount of Oxygen and Nitrogen decrease per unit volume and thus density decreases because mass is decreasing.