Question

What reaction would take place if hot tugsten was surrounded by air?

Answer 1

instead of argon in a lightbulb i mean.

Answer 2

it will from oxide on the metal at that current level

Answer 3

and will not emit the light

Answer 4

yaaaa tungsten is metal

Answer 5

so normal bulbs of tungsten doesnt hv air inside? if so they wont work?

Answer 6

Argon is a noble gas, which means it is inert (unreactive). Air however contains around 20% oxygen. If the bulb is filled with air, the atmospheric oxygen will oxidise the filament. this then cause it to not shine so brightly/not shine. The oxygen can also cause the filament to burn, making the bulb dangerous. Therefore, Argon provides an inert atmosphere to prevent the above from happening

Answer 7

so, on the bulbs, they all have argon?

Answer 8

yaaaa or helium may be present in some cases but the what we call tube light usually consist of Ar because its cheap

Answer 9

they insert argon in the bulb? why not only N2.. wouldnt be cheaper?

Answer 10

the Filament is tungstem and the atmosphere is argon. mostly

Answer 11

how do they rich the atmosfere with argon?

Answer 12

argon is innetr because its a noble gas but can u explain and give the name of the treaction that would occur.

Answer 13

the atmosphere in the bulb is riced with argon when its made but thats not relivent.

Answer 14

could a bulb have no gas inside?

Answer 15

i dont think so. not sure.

Answer 16

i thought the electrons excited were the ones on the metal

Answer 17

yaaa but vacuum will be there
these were manufactured in olden days now days you get with noble gases filled bulb

Answer 18

can u explain and give the name of the treaction that would occur.

Answer 19

reaction*

Answer 20

can u explain and give the name of the reaction that would occur.

Answer 21

its not a chemical reaction just excitation of electron and relese of photon energy by tungsten filament when you apply sufficient voltage

Answer 22

this is the exact quiestion in my revision booklet:

Answer 23

hes asking if it had air with oxygen

Answer 24

W will be equal as Cr .. so its a redox reaction

Answer 25

when electricity is pased through the tungsten filliment it gets very hot and gives out light. what reaction would occur if the hot tungsten was surtrounded by air instead of argon?

Answer 26

ok ok fine
it will be oxidation of filament that is tungsten reacting with oxygen to tungsten oxide

Answer 27

ty

Answer 28

W+O2 = WO3
just balance the equatin thats
all

Answer 29

you asked another question why not nitrogen
the nitrogen may be more reactive comparatively then the inert gases
this because it contains triple bond where two pie bonds are present they may absorb the photon light for excitation and intensity of light may decrease

Answer 30

i have a new question: H2O2. write down everything thatthe formulae tels you about each molicule of the hydrogen peroxide. i am only puting the question here because i dont know how to post a new question.

Answer 31

where as the inert gases do not have any bonds they are monoatomic

Answer 32

first time i use openstudy... its awesome.. iam from Portugal btw

Answer 33

yeah it is isnt it inm from uk

Answer 34

but ur saying N2 reacts with light?!

Answer 35

no it absorbs the llight photons but i dont understand the thing about bonds

Answer 36

ok let it be
its less suitable than the inert that sall

Answer 37

i have a new question: H2O2. write down everything thatthe formulae tels you about each molicule of the hydrogen peroxide. i am only puting the question here because i dont know how to post a new question.

Answer 38

u mean its less inert as noble gases , right?

Answer 39

?

Answer 40

yeah

Answer 41

yeahaaa

Answer 42

h2o2 hydrogen peroxyde

Answer 43

gets in H20 and frees 02

Answer 44

yeh but does it mean the way its bonded

Answer 45

its and hydrogen bond

Answer 46

H2O2 is good oxidising agent mean it liberates nascent oxygen{O} and not the Oxygen molecule {O2} . the nascent oxygen is more reactive than the O2 thats why its used in oxidation process

Answer 47

no the question says write down everything that the formlee tels u about each molecule of hydrogen peroxide

Answer 48

http://www.chm.bris.ac.uk/motm/h2o2/h2o2h.htmplease see the following link

Answer 49

kk

Answer 50

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www.chm.bris.ac.uk
Apache/2.0.46 (CentOS)

Answer 51

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