Chem Check 7B

Chem Check 7B - Which of the following statements describes...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Which of the following statements describes the energy changes involved when chemical bonds are broken? When chemical bonds are broken, the energy stored in them is released to the surroundings as heat. Energy is required to break bonds because bonded atoms have more potential energy than separated atoms. When a bond is broken, energy is either released or absorbed depending on the energy difference between the reactants and products. Energy is required to break bonds because when atoms bond to each other they are more stable than the separate atoms. What is the maximum amount of work from the cell if all species are in their standard states? +353 kJ +0.054 J -353 kJ -0.054 J How would ΔE cell change if the volumes of both solutions were doubled but the concentrations remain at 1.0M? increase decrease no change The solubility of potassium nitrate (KNO 3 ) in water increases as temperature increases. Select the best explanation for this observation.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Chem Check 7B - Which of the following statements describes...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online