Answer all questions correctly in the examination booklet (10 pts each) 1) indicate if entropy is increasing or decreasing for each of the following processes: a) making ice cubes b) alphabetizing files c) 2 kcio, 2 kcio, +0 2) using the data provided, determine if the following reactions are spontaneous: chaại + 500 - 3 co2 + 4ho) 3)at what temperature is the following reaction at equilibrium? 2na,, + 2h,0 - 4naoh + o, ah -109 kj, as -133.2 j/k 4) is the reaction 0, +4h' + 4fe - 2 h,0 +4fe(ag'=-177.35 kj) spontaneous at 25°c and a ph of 2.56 if [fe] -0.02 m. [fe"]=0.89 m and p -0.35 atm? 5) the reaction h, +1, -2hi is in equilibrium at 730°c when pe=pp=0.35 atm and p-0.05 atm. what is the value of ag at this temperature? 6) balance the following redox reaction: sn? + cr,0,- sn" + cr+ 7) write a balanced equation and determine eº for each of the following cells: a) crcrnini b) (cf|cl|mno, mn) 8) for the reaction: sr+ mg sr + mg, k -2.69 x 102 at 25°c. calculate e 9) is the following reaction spontaneous at so'c? ag ag (0.0078 m) ni(0.023 m)ni 10) one gram of sn was electroplated from a sncl, solution in 30 minutes. what was the current used?
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Chemistry, 21.06.2019 22:30
Agas at 155 kpa and standard temperature has an initial volume of 1.00 l. the pressure of the gas rises to 500 kpa as the temperature also rises to 135°c. what is the new volume? 2.16 l 0.463 l 0.207 l 4.82 l
Answers: 3
Chemistry, 22.06.2019 00:00
Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what
Answers: 3
Chemistry, 22.06.2019 06:10
How many moles of gas are present if p=11 atm, v=12l, t=185k?
Answers: 1
Chemistry, 22.06.2019 14:30
Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?
Answers: 1
Answer all questions correctly in the examination booklet (10 pts each) 1) indicate if entropy is in...
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