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guapka [62]
4 years ago
10

What is the oxidation state for a Mn atom? (1) 0 (2) +7 (3) +3 (4) +4

Chemistry
1 answer:
ss7ja [257]4 years ago
5 0

Answer : The correct option is, (1) 0

Explanation :

Oxidation state or oxidation number : It represent the number of electrons lost or gained by the atoms of an element in a compound.

Oxidation numbers are generally written with sign (+ and -) first and then the magnitude.

When the atoms are present in their elemental state then the oxidation number will be zero.

As per question, 'Mn' atom is a free element that means it is present in their elemental state then the oxidation state will be zero.

Hence, the correct option is, (1) 0

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4. According to the explanation given in one previous session, in this case we have the following reaction:

Zn + NO3- -> Zn(OH)42- + NH3

Our important informations to have in mind always first:

Single elements = 0 of oxidation number

Zn = 0

Oxygen = 2-

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N (reactant) = 5+

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Now for the balancing of the reaction:

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Answer:

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3 years ago
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Answer:

Option c. 2Kl + Cl2 —> 2KCl + l2

Explanation:

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Of the following equilibria, only ________ will shift to the right in response to a decrease in volume. N2 (g) + 3H2 (g) 2NH3 (g
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Answer:

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Explanation:

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.

This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

Decrease the volume

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On decreasing the volume the equilibrium will shift in right direction due to less number of gaseous moles on product side.

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On decreasing the volume the equilibrium will shift in no direction due to same number of gaseous moles on both sides.

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3 years ago
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