KC Distance Learning Lab: Catalysts Objectives
KC Distance Learning Lab: Catalysts Objectives
• Evaluate different catalysts to determine which the best is
• Illustrate the difference between using a heterogeneous and homogeneous catalyst
• Demonstrate how varying the quantities of a catalyst can affect the reaction Introduction If you’ve ever used hydrogen peroxide (H2O2) on a wound, you’ve most likely noticed the immediate reaction that causes bubbles to form. This reaction is accelerated by what is known as a catalyst – in this case an enzyme in blood that accelerates the decomposition of the hydrogen peroxide into oxygen (O2) gas and water (H2O).
Scientists use many different types of catalysts to control the speed of a reaction. In addition to speeding up a chemical reaction, another beneficial feature of a catalyst is that it is not consumed during the reaction – in other words it does not form or change the products of the reaction. Enzymes are biological catalysts and are necessary for many of the reactions that take place in your body. Chemical reactions require a small amount of energy, known as activation energy, to begin the reaction.
If a chemist cannot change the other conditions of the reaction (temperature, concentration, etc.) to increase the reaction rate, then the chemist may select a catalyst that will lower the activation energy and speed up the reaction. There are many different types of catalysts and frequently there are several catalysts that will work for a given reaction.
 Selecting the correct Figure 1:
One day soon, homeowners everywhere may be protected from deadly carbon monoxide fumes, thanks to a device, invented at NASA Langley Research Center, which converts deadly carbon monoxide to carbon dioxide. The chemical catalysts -tin oxide and platinum -are applied to a surface. Air passing over the surface reacts with the catalysts, transforming carbon monoxide into carbon dioxide. The device requires no energy for operation doesn't need to be plugged in, has no moving parts
Â
Â
Answers
Status NEW
Posted 22 Apr 2017 09:04 AM
My Price 10.00
-----------
Attachments
file 1492853122-KC Distance Learning Lab Catalysts Objectives.docx preview (743 words )
K-----------C D-----------ist-----------anc-----------e L-----------ear-----------nin-----------g L-----------ab:----------- Ca-----------tal-----------yst-----------s O-----------bje-----------cti-----------ves----------- -----------•----------- Ev-----------alu-----------ate----------- di-----------ffe-----------ren-----------t c-----------ata-----------lys-----------ts -----------to -----------det-----------erm-----------ine----------- wh-----------ich----------- th-----------e b-----------est----------- is----------- -----------•----------- Il-----------lus-----------tra-----------te -----------the----------- di-----------ffe-----------ren-----------ce -----------bet-----------wee-----------n u-----------sin-----------g a----------- he-----------ter-----------oge-----------neo-----------us -----------and----------- ho-----------mog-----------ene-----------ous----------- ca-----------tal-----------yst----------- -----------•----------- De-----------mon-----------str-----------ate----------- ho-----------w v-----------ary-----------ing----------- th-----------e q-----------uan-----------tit-----------ies----------- of----------- a -----------cat-----------aly-----------st -----------can----------- af-----------fec-----------t t-----------he -----------rea-----------cti-----------on -----------Int-----------rod-----------uct-----------ion----------- If----------- yo-----------uâ€-----------™ve----------- ev-----------er -----------use-----------d h-----------ydr-----------oge-----------n p-----------ero-----------xid-----------e (-----------H2O-----------2) -----------on -----------a w-----------oun-----------d, -----------you-----------’-----------ve -----------mos-----------t l-----------ike-----------ly -----------not-----------ice-----------d t-----------he -----------imm-----------edi-----------ate----------- re-----------act-----------ion----------- th-----------at -----------cau-----------ses----------- bu-----------bbl-----------es -----------to -----------for-----------m.
Not Rated(0)