All spontaneous reactions show a net decrease in enthalpy entropy free energy te

Question

All spontaneous reactions show a net decrease in enthalpy entropy free energy temperature The entropy of a system is best described as a function of the order of a system temperature enthalpy Klingon - Romulan interactions In electrolysis, the number of electrons lost by the chemical action at the anode, compared to the number of electrons gained at the cathode must be greater must be the same must be less The substance which is reduced in the reaction Zn + Cu^2+ rightarrow Zn^2+ + Cu is: Zn Cu^2+ Zn^2+ Cu Classify each of the following elements as metal, metalloid, or non-metal and explain (briefly) your reasoning: Sodium Chlorine Arsenic

Explanation / Answer

1. All spontaneous reaction show anet decrease in Free energy.

Ans. (c) free energy Since G =H - T.S

2. Ans. (b) Enthalpy

3. Ans. (b) Must be same

4. Ans. (b) Cu2+ __Since it will accept two electron and convert in to Cu

5.

Sodium (Metal) : It have all properties of metal like conducing, heat conductiing.

Chlorine (Non metal): It exist in Gas form.

Arsenic (Metalloid): It will not itself works as metal but when it will doped with any other semiconductor materal it will act as metalloid

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