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24.25 moles of NO can be produced using 97 moles of HNO3.
<h3>What is balanced chemical equation?</h3>Equal numbers of atoms from various elements are present in both the reactants and the products in balanced chemical equations. Varied elements' atom counts in the reactants and products of unbalanced chemical equations are different.
3 Cu + 8HNO3 g → 3 Cu(NO3)2 + 2 NO + 4 H2O
The number of moles consumed can be calculated using comparing with coefficients in the balanced reaction .
So , from above eq we get that 8 moles of HNO3 are consumed to make 2 moles of NO.
⇒ 8 HNO3⇔2 NO
⇒ 1 HNO3⇔ 1/4 NO
This means that for each mole of HNO3 produces 1/4 moles of NO.
So , for 97 moles of HNO3 , moles of NO can be made,
So, total moles of NO made are 24.25 moles.
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Answer : The reaction not spontaneous is:
Explanation :
The given reactions are the examples of single displacement reactions.
Single displacement reactions : It is defined as the reactions in which most reactive metal displaces the least reactive metal from its chemical reaction. The reactivity of metals is given by the series known as reactivity series.
That means the metals that lie above in the series can replace the metals which lie low in the reactivity series.
For the given options:
<u>Option A :</u>
Copper lies low in the series than hydrogen and hence is less reactive. So, it will not displace hydrogen. Thus, this is a non-spontaneous reaction.
<u>Option B :</u>
Magnesium lies above in the series than hydrogen and hence is more reactive. So, it will easily displace hydrogen. Thus, this is a spontaneous reaction.
<u>Option C :</u>
Nickel lies above in the series than hydrogen and hence is more reactive. So, it will easily displace hydrogen. Thus, this is a spontaneous reaction.
<u>Option D :</u>
Aluminum lies above in the series than hydrogen and hence is more reactive. So, it will easily displace hydrogen. Thus, this is a spontaneous reaction.
<u>Option E :</u>
Zinc lies above in the series than hydrogen and hence is more reactive. So, it will easily displace hydrogen. Thus, this is a spontaneous reaction.
Hence, the reaction not spontaneous is:
