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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: jalen on October 21, 2007, 04:28:38 PM

Title: Algebraically combine equations
Post by: jalen on October 21, 2007, 04:28:38 PM

Zinc sulfide reacts with oxygen gas to produce zinc oxide and sulfur dioxide.

2ZnS +3O₂ --> 2ZnO + 2SO₂

Write the chemical equation for the formation of the indicated number of moles of each compound from its elements. Algebraically combine these equations to obtain the given equations.

1. 2 Zn + S -->2 ZnS
2. 2 Zn + 1/2 O₂ -->2 ZnO
3. 2 S +O₂ -->2 SO₂

(1) 2 ZnS --> 2 Zn + S (flipped equation)
(2) 2 Zn + 1/2 O₂ -->2 ZnO
(3) 2 S +O₂ -->2 SO₂

Can you help me check if what I have so far is right and also, should there be more steps after this?

Title: Re: Algebraically combine equations
Post by: AWK on October 22, 2007, 01:51:01 AM

Quote

1. 2 Zn + S -->2 ZnS
2. 2 Zn + 1/2 O2 -->2 ZnO
3. 2 S +O2 -->2 SO2

(1) 2 ZnS --> 2 Zn + S (flipped equation)
(2) 2 Zn + 1/2 O2 -->2 ZnO
(3) 2 S +O2 -->2 SO2

All above reaction are not balanced properly