Explain the following reactions as exothermic or endothermic

Reference no: EM13290197

Label each of the following reactions as exothermic or endothermic ("exo" or "endo"), and according to whether work is done on or by the system, or no work is done at all ("on", "by" or "none")? Note that no "endo-on" cases appear here, as these are always thermodynamically unfavourable. There is no need to do any calculation, use chemical arguments to predict the sign of the enthalpy change.
S(s) + 3/2 O2(g) ? SO3(g)

N2(l) ? N2(g)

NH3(g) + HCl(g) ? NH4Cl(s)

Cl2(aq) + 2 KBr(aq) ? 2 KCl(aq) + Br2(aq)

Zn(s) + 2HCl(aq) ? ZnCl2(aq) + H2(g)

1. endo-by
2. exo-none
3. exo-by
4. exo-on

Reference no: EM13290197

Questions Cloud

Measurement is best defined : Measurement is best defined as which of the following?

Explain tank with oxygen and the other with acetylene : Imagine that you have a 5.50 L gas tank and a 2.50 L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch.

Best example of a phenomenon : Which of the following is the best example of a phenomenon?

Calculate probabilities-likelihood and impact of risk : Identify what risk areas could be quantified in order to provide appropriate risk data for tables for Mexi-Energy’s Management team to analyze. Format these into a Table for their review. Limit the table to one page and make certain you rank risks qu..

Explain the following reactions as exothermic or endothermic : Label each of the following reactions as exothermic or endothermic ("exo" or "endo"), and according to whether work is done on or by the system, or no work is done at all ("on", "by" or "none")

Determine the total distance she travels : A girl delivering newspapers covers her route by traveling 4.00 blocks west, 4.00 blocks north, and then 6.00 blocks east. What is the total distance she travels

Explain common technique used during protein purification : The use of high salts, e.g. "salting out" is a common technique used during protein purification. Describe the chemical process underlying this method.

Characteristic of open promoters : Which of the following is characteristic of open promoters?

Determine velocity needed to achieve melting the bullet : Lead has a latent heat of fusion of 2.32x10^4 J/kg, a specific heat of 128 J/(kg K), and a melting point of 228°C. determine velocity needed to achieve melting the bullet

User Account

All Pages