PREPARATION OF(POTASSIUM)ALUM
Name_____________________________Section______
Week One:
Form of aluminum used:________ Mass of aluminum used:_____________
Moles of 4M KOH used:_________________________
The balanced equation for the reaction of potassium hydroxide and aluminum:
Moles of 6M H2SO4 used:________________________
The balanced equation(s)for the reaction of sulfuric acid:
The balanced equation(s)for the formation of alum from its components:
Mass of alum crystals obtained:______________________________
Theoretical yield of alum:___________ %yield of alum:______________[Show calculations]
Week Two:
Observed melting point (range)of“standard”alum:_______Literature MP of alum:_________Observed melting point (range)of synthesized alum:____________Corrected MP:_________Comment on any corrections that were needed in obtaining the M.P.of your alum and on theagreement between the MP of your sample and the expected MP.
DESCRIBE ANY TESTS PERFORMED ON YOUR ALUM ON THIS SHEET.BE SURE TOINCLUDE ALL CHEMICAL REACTIONS.
Post Lab discussion Questions:
1. How did this lab conform to the 12 Green Principles of Chemistry?Which Principles?
2. W„ hat im‟provements could be made to this lab?Any improvements to make this labgreener ?
3. Were there any parts to this lab that violated the 12 Principles? If so,which ones and why?
4. List some of the concerns associated with Aluminum production from raw ore.
5. What are the advantages to recycling aluminum as compared with Al production via the ore?
6. If recycling one aluminum can saves the energy equivalent of 1 cup of gasoline(8 oz),howmuch energy could you save in a year if you recycled two aluminum cans per day?How manygallons of gas is this?How much would that gas cost?
近日快云科技发布了最新的夏季优惠促销活动,主要针对旗下的香港CN2 GIA系列的VPS云服务器产品推送的最新的75折优惠码,国内回程三网CN2 GIA,平均延迟50ms以下,硬件配置方面采用E5 2696v2、E5 2696V4 铂金Platinum等,基于KVM虚拟架构,采用SSD硬盘存储,RAID10阵列保障数据安全,有需要香港免备案CN2服务器的朋友可以关注一下。快云科技怎么样?快云科技好不...
百纵科技湖南百纵科技有限公司是一家具有ISP ICP 电信增值许可证的正规公司,多年不断转型探索现已颇具规模,公司成立于2009年 通过多年经营积累目前已独具一格,公司主要经营香港服务器,香港站群服务器,美国高防服务器,美国站群服务器,云服务器,母机租用托管!美国CN2云服务器,美国VPS,美国高防云主机,美国独立服务器,美国站群服务器,美国母机。美国原生IP支持大批量订货 合作 适用电商 亚马逊...
WHloud Date(鲸云数据),原做大数据和软件开发的团队,现在转变成云计算服务,面对海内外用户提供中国大陆,韩国,日本,香港等多个地方节点服务。24*7小时的在线支持,较为全面的虚拟化构架以及全方面的技术支持!官方网站:https://www.whloud.com/WHloud Date 韩国BGP云主机少量补货随时可以开通,随时可以用,两小时内提交退款,可在工作日期间全额原路返回!支持pa...