Question

Plz help:)

Answer 1

@mathslover @jhonyy9 Plz help:)

Answer 2

what's the molecular weight of sulphur (let it be M)??
total weight = M + 2x16 (gm in one mole)

Answer 3

@Yahoo! @apoorvk Plz help:)

Answer 4

though experimentX has given an answer, this question would probably do better in the chemistry section, so I would post it there

Answer 5

k:)
thanx.
Sorry i didn't post it in chem section becoz my previous question wasn't also solved:(

Answer 6

i tjink we have to take half the mass of sulphur

Answer 7

becoz so2 1 s atom and 2 o atom

Answer 8

1;2

Answer 9

so plz solve as i solved for H2O.

Answer 10

half the moles f sulfur, not mass

@maheshmeghwal9 how did you get 16 in your first problem?

Answer 11

hey look same as H20 2 h2 atom and 1 02 atom the same happens here look

Answer 12

sorry i didn't understand @TuringTest Plz tell more:)

Answer 13

in your solution you say "oh, it's a 1:2 molar ratio in between H and O, and the oxygen part of H2O weighs 16, so a single O weighs 8"

but how did you know that O2 weighs 16 ? you were allowed to use the table I presume?

Answer 14

ya:) we are allowed for periodic table:)

Answer 15

@TuringTest but i think the ratio was 2:1.

Answer 16

yeah, sorry
ok so the ratio in SO2 is 1:2
and the question is what? how much sulfur combines with 1 mole of O2 ???

Answer 17

the molar mass of oxygen is not 8 anyway...
this is all confusing

Answer 18

I'm not really sure what you're trying to do, calculate the mass of some element in 1 mole of some particular molecule?

Answer 19

Molar Mass=16
Equivalent Mass=8
yeah of course we know a law:-
it states that one equivalent of an element combines with one equivalent of another element in a compound.
So equivalent wt. of O is 8 which 1/2 its mole
So sulphur's mole will also be 1/2 for equivalent
; i.e. its eq, wt {S} will be 32/2 =16.
Thanx I gt.
I don't know how i gt?
really amazing!

Answer 20

haha

Answer 21

lol

Answer 22

yeah, to put it into words you are solving the problem
"how many grams of X element are in 1 mole of Y molecule?"

I had never heard the term "equivalent mass before though. I also think your final answer should be in grams, not grams/mole

Answer 23

yeah of course :)

Answer 24

thats my mistake!

Answer 25

since you had to multiply molesX(molar mass)
which is
moles(grams/mole)=grams

:)

Answer 26

^_^

Answer 27

1 mole of S combines with 2 moles of O.
1 mole of O combines with 2 moles of H.

Eq. weight is defined as the weight of element that combines with 1 gm of H.
As 2 moles of H combined with 1 mole of O
i.e. 16 g of O combined with 2 g of H
Eq. mass of O is 8g.

Now 32 g of S combines with 32 g of O which in turn combines with 4g of H
So, using this analogy, eq. mass of S would be 32/4 = 8g

However, when H and S do combine, H2S is formed in which 32g of S combines with 2g of H making its equivalent mass equal to 32/2 = 16.

But for this question, however, the equivalent mass would be 32/4 = 8g.

Answer 28

@FoolAroundMath so u mean eq. wt. of one element can be different in different compounds.
As a summary an element can have many eq. wt.. ?

Answer 29

Yeah i know u r right 100%

Answer 30

It has been 3 years since I have had any contact with equivalent weights and stuff, but yeah, the factor by which the molecular mass (for a compound) or atomic mass (for an element) is divided to get the equivalent mass depends primarily on the oxidation state of the element.
In case of other compounds such as acids, it is generally the number of replacable H atoms and so on.

Answer 31

In SO2, S has an eq wt of 8g, in H2S it's eq wt is 16g in H2SO4, S has an oxidation state of +6, thus its eq wt is 32/6g

Answer 32

but what eq. wt should i use in calculation?

Answer 33

@FoolAroundMath

Answer 34

It really depends on what is being asked. If nothing specific is mentioned, then I would take H2S since it is the direct combination of S with H. which would give 16g

Here on the other hand, you were asked for eq wt of S in SO2 where S has an oxidation state of +4. So, eq wt here would be 32/4 = 8g

Answer 35

k:) thanx a lot:)