Question

Name add catensity Cold Data Table for Flame Tests Metal found in the salt Flame Color and Intensity eignx orange ish nbit Tree cour BaCl2 cuous ксі MgCl₂ srcih green Огчhtt bethh blueish PURPLE Fech ماه orange toith spark Pet helloween orange {n1944 r e scancet red 200h cooke serontium Nael ик, и Unknown scarlet red sn I Things to consider: • How do you know that the observed color differences are due to the metal cation and not the anion or alcohol? Do you think you could use the flame test to determine the identity of unknowns in a mixture? Why or why not? Why do you not see distinct lines when the metal salts are burned? Why do you think the chemicals have to be heated in the flame first before the colored light is emitted? Why?

can someone help me with the THINGS TO CONSIDER problems

Answer 1

_. Ans: 1 Ancans are culco bols do not give flame_fest because ci for flame test fo.bappen ct must emct lcght in the visible reacion but most non metas ancons do not do this very strong. cos even cf there is some ěmcascons from the non metal ancon i co many cases thein flame Lexcitation officiency or very low- whené aj metals have heah excitatcán effe ciency and strong emosscon cn veicble region. Conly alcohol Ecves blue and yellow IN flamme which is vescible cn all of the fests for al salis. forest flame test for alcohol alones L carried out to destinguish it. Ans: 2 97 can be used to fend or know the cdentety of unknown's on a mixture however ct I would not be cory effective because many different compound on elements, all of the colours of icght would bring the flame closer to vust emitting white right. Ans: 3 l you donot see dcstcnct lines wheni metal Salts are burned became thene were other elements Icke methanol, salt. present. Another reason may be that those are not vc'scble_to normal human ege so. ed with Gamþcanner

Ans: 4 The chemicals have to be heated to excite electrons so that when the electrons lose energy again , energy will be I emitted on the forum of light and we can see coloured flames cs Scalped with CanScanner