An endothermic reaction is carried out in a coffee-cup calorimeter. Which statement is incorrect for this process?
a.) The temperature of the water decreases.
b.) The enthalpy change for the reaction is equal to qH2O.
c.)Heat is absorbed from the water.
d.) The enthalpy change for the reaction is positive.
e.) The products have higher enthalpy than the reactants.
or could someone at least explain this coffee-cup thing to me...because i don't understand its purpose or process...thx!
2006-10-15 07:32:55 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
You gotta do your own homework but ill tell what the coffee-cup thing is.
They mean the coffee cup is a Styrofoam cup (Which is a GREAT insulator). It creates a closed system so nothing can interfere with the reaction going on inside. Also, bomb-calorimeters are expensive whereas styrofoam cups are really cheap.
2006-10-15 18:46:06 · answer #1 · answered by pyroman10101 2 · 0⤊ 0⤋
I don't know quite what you mean by "qH2O", but all the other answers are correct.
2006-10-18 23:36:37 · answer #2 · answered by Gervald F 7 · 1⤊ 0⤋