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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: anarchron on June 06, 2006, 04:49:43 AM

Title: Zn(s) + H2SO4(l) -> ZnSO4(aq) + SO2(g) + H2O(l)?
Post by: anarchron on June 06, 2006, 04:49:43 AM: If I were to oxidize Zn with H₂SO₄, would this be the right equation?

Zn_(s) + H₂SO₄_(l) -> ZnSO₄_(aq) + SO₂_(g) + H₂O_(l)?

And if i were to react the monomer and polymerize it to 1000 units and the molar mass of the monomer is 104gmol-1, what would the resulting mass of the polymer be?

HO-X-OOH
Title: Re: 2 Questions
Post by: Alberto_Kravina on June 06, 2006, 05:58:20 AM: Quote
If I were to oxidize Zn with H2SO4, would this be the right equation?

Zn(s) + H2SO4(l) -> ZnSO4(aq) + SO2(g) + H2O(l)?
Zinc reacts with sulfuric acid to produce hydrogen and Zinc sulfate, however, this could be a "byreaction"
Title: Re: 2 Questions
Post by: Will on June 06, 2006, 06:17:37 PM: Quote from: anarchron on June 06, 2006, 04:49:43 AM
And if i were to react the monomer and polymerize it to 1000 units and the molar mass of the monomer is 104gmol-1, what would the resulting mass of the polymer be?

HO-X-OOH

The HO-X-OOH confused me! I thought it was your signature or something ;D!

I would write it as HO-[CH₂]_n-COOH, so people can't confuse the OOH with peroxyacids or something else.

These compounds undergo the usual esterification reaction in the right conditions, with the elimination of H₂O. However as the alcohol and acidic functional groups are on the same molecule it can undergo condensation polymerisation. If 1000 units formed the polymer then 999 molecules of H₂O should be lost giving a final mass of 86018gmol^-1 ((1000 x 104)-(999 x 18)).
Title: Re: 2 Questions
Post by: T_N_T on June 06, 2006, 09:16:23 PM: Quote from: anarchron on June 06, 2006, 04:49:43 AM
If I were to oxidize Zn with H₂SO₄, would this be the right equation?

Zn_(s) + H₂SO₄_(l) -> ZnSO₄_(aq) + SO₂_(g) + H₂O_(l)?

If sulfuric is diluted and temperature is not high, the reaction is formed zinc sunfate and hydrogen
If not the reaction which you typed is correct!