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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: Oxydon on May 04, 2006, 09:18:49 PM

Title: are these reactions corrects?
Post by: Oxydon on May 04, 2006, 09:18:49 PM

cupper sulphate +sodium hydroxide------->cupper hydroxide + sodium sulphate
CuSO4 +NaOH------>CuOH +NaSO4

sodium chloride + silver nitrate-------->sodium nitrate + silver chloride
NaCl + AgNO3-------> NaNO3 +AgCl

Potassium Iodide + Lead Nitrate------->potassium nitrate + Lead Iodide
2KI + Pb(NO3)2 --------> 2KNO3 + 2PbI

Dilute sulphuric acid +barium Chloride-------->Hydrochloric acid +barium sulphate
H2SO4 + BaCl ----------> 2HCl + BaSO4

are these corect?

Title: Re: are these reactions corrects?
Post by: mike on May 04, 2006, 09:30:50 PM

They aren't balanced.

You should use subscripts where appropriate.

First equation is wrong anyway because copper is Cu²⁺ and sodium is Na⁺.

Copper is spelt "copper" not cupper, probably a typo though ;)

Do you have to state whether they are solids or aqueous?

Title: Re: are these reactions corrects?
Post by: Oxydon on May 04, 2006, 09:39:14 PM

thanks for the help mike....but i have figured it all out....thanks for helping though.

Title: Re: are these reactions corrects?
Post by: mike on May 04, 2006, 09:43:51 PM

And the answers are...

Title: Re: are these reactions corrects?
Post by: Oxydon on May 04, 2006, 10:12:27 PM

Cu(SO₄) +2NaOH(aq) -------->Cu(OH)₂ +Na₂SO₄

Title: Re: are these reactions corrects?
Post by: Oxydon on May 04, 2006, 10:22:50 PM

Cu(SO₄)₂(s) + NaOH(aq)------>Cu(OH)₂(s) + Na₂SO₄(aq)

NaCl(aq) + AgNO₃(aq) -------->NaNO₃(aq) + AgCl(aq)


2KI(s) +Pb(NO₃)₂(aq)--------->2KNO₃(aq) + 2PbI(s)

H₂SO₄(aq) + BaC_l2(aq) ------------->2HCl(aq) + BaSO₄(s)



 

Title: Re: are these reactions corrects?
Post by: mike on May 04, 2006, 10:26:53 PM

CuSO₄ so first one needs re-doing

Title: Re: are these reactions corrects?
Post by: Oxydon on May 04, 2006, 10:41:28 PM

CuSO₄(s) +NaOH(aq)------------->Cu(OH)₂(s) + Na₂SO₄(aq)

Title: Re: are these reactions corrects?
Post by: mike on May 04, 2006, 11:58:51 PM

2NaOH :)

Title: Re: are these reactions corrects?
Post by: AWK on May 05, 2006, 02:40:18 AM

AgCl is solid, lead iodide formula  is PbI₂

Title: Re: are these reactions corrects?
Post by: mrdeadman on May 05, 2006, 02:55:52 PM

Quote from: AWK on May 05, 2006, 02:40:18 AM

AgCl is solid, lead iodide formula  is PbI₂

+1