\(NH_{3(g)} + HCl_{(g)} → NH_4Cl_{(s)}\)
The entropy change in the system above is
positive
zero
negative
indeterminate
Explanation
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The following processes are accompanied by positive entrophy changes. Invariably, the reverse of each of the processes has a negative entrophy change
Examples: Decomposition reactions have positive entrophy changes
CaCo3(s) -> CaO(s) + C02(g)
NH4Cl(s)->NH3(g) +HCl(g)
TAKE note: The reversal of this processes have negative entrophy changes and since
Addition reaction-- NH3+HCl->NH4
The entrophy reaction is negative. Therefore the answer is C
Entropy is the degree of disorderliness, now we should expect a decrease in the entropy of the reaction in the question, since there is a drecrease in the number of gases as the reactions proceed. So the entropy of the system is negative
guys, entropy is the degree of disorderliness. like smoke for example . from the equation above,you can see that gas is mixing with solid to form solid. therefore since solid doesnt go in random movement like the gas(entropy) that is why its negative which means impossoble. the reaction itself is endothermic . entropy is different from endo or exothermic reaction...hope that helps
entropy would be positive if (entropy increases)
1) their is more gaseous product than reactant
2) more product is formed than reactant
entropy eould be negative if (rntropy decreases)
1) their is more gaseous reactant than products
2) more reactant is present than products
yea thanks bro. U just reminded me of something. .exothermic -negative, endothermic -positive...But one more thing, How can one identify and differentiate d both??
why it is negative is dat ............ the reaction its self is an exothermic reaction .seems u know dat exothermic reaction are d reaction in wich heat is givenoff.
