The decomposition of nh4hs is endothermic: nh4hs(s)⇌nh3(g)+h2s(g) part a which change to an equilibrium mixture of this reaction results in the formation of more h2s? which change to an equilibrium mixture of this reaction results in the formation of more ? a decrease in the volume of the reaction vessel (at constant temperature) an increase in the amount of nh4hs in the reaction vessel an increase in temperature all of the above

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the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

c. is the answer

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