Search found 396 matches

by GrahamKemp
Mon Aug 22, 2016 5:26 pm
Forum: Chemistry forum
Topic: How Can i balance this reaction?
Replies: 4
Views: 10361

Re: How Can i balance this reaction?

:?: Cannot be balanced.

:idea: Try without the hydroxide anion.

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2 RH + CO3{2-} = 2 R{-} + CO2 + H2O
:idea: Try without the carboxic anion

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RH + OH{-} = R{-} + H2O
:!: Conclude that you had a combination of reactions.
by GrahamKemp
Mon Aug 22, 2016 5:10 pm
Forum: Chemistry forum
Topic: reaction balance
Replies: 1
Views: 13031

A bit late but

ICl3+H2O = ICl + HIO3 + HCl The key is to remove distractions and reveal : I am positive. -Spectator: I{3+} = I{+} + IO3{-} 1/2 Equan: I{3+} = I{+} | I{3-} = IO3{-} Balance ...
by GrahamKemp
Sun Aug 21, 2016 4:21 pm
Forum: Chemistry forum
Topic: Redox balance
Replies: 3
Views: 12172

If I want the equation in basic ambient shouldn't I have OH{-} in the products? In the reactants as it turns out. Take the equation O2 + Sb = H2O2 + SbO2{1-} Split into O2, Sb halves. O2 = H2O2 | Sb = SbO2{1-} Balance O O2 = H2O2 | Sb + 2 H2O = SbO2{1-&a...
by GrahamKemp
Fri Aug 19, 2016 6:41 pm
Forum: Chemistry forum
Topic: balancing equations
Replies: 2
Views: 13499

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Fe2O3 + 3 C = 2 Fe + 3 CO
by GrahamKemp
Thu Aug 18, 2016 9:43 pm
Forum: Chemistry forum
Topic: Balance ionic reaction
Replies: 3
Views: 34855

Hello. I stumbled across this problem when looking for some help in solving a practice problem for school. How would one balance this equation using the ion-electron method of redox. Thanks! Take the equation stripped of spectator ions, water, and its components. As given: IO3{-} ...
by GrahamKemp
Thu Aug 18, 2016 8:37 pm
Forum: Chemistry forum
Topic: I need help balancing these two half-reactions.
Replies: 1
Views: 4132

You can't just add electrons willy nihly, you have to have justification. In the hydrogen peroxide half equation, first balance the hydrogen with protons, and then balance the charge with electrons. H2O2 + 2 H{+} + 2 e{-} = 2 H2O In the iodide half reaction, rever...
by GrahamKemp
Thu Aug 18, 2016 7:51 pm
Forum: Chemistry forum
Topic: Reaction
Replies: 1
Views: 10503

Re: Reaction

faisal alam wrote:1.Ca2CO3=CaO+CO2
2.NaCl+AgNO3=AgCl+NaNO3
Are you asking if you have the equations correct, or balanced?

1. Almost, except there is only one calcium in calcium carbonate. So the decomposition is:

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CaCO3 = CaO + CO2
2. Yes. The double replacement reaction is:

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NaCl+AgNO3=AgCl+NaNO3
by GrahamKemp
Thu Aug 18, 2016 7:27 pm
Forum: Chemistry forum
Topic: Al + HClO3 = Al(Cl3)3 + Cl2 + H2O , It is correct?
Replies: 1
Views: 3902

Nope. The reaction between Aluminium and Chloric Acid liberates Hydrogen, not Chlorine. Also, Al(Cl3)3 is nonsensical.; you dropped an O, so there is no need for water to balance the oxygen. It is a metal-acid reduction/oxidation. 2 Al + 6 HClO3 = 2 Al(ClO3)3 + 3 H2 &...
by GrahamKemp
Thu Aug 18, 2016 6:44 pm
Forum: Chemistry forum
Topic: Balance: C4H12N2SO4 + NaOH -> C4H10N2 + Na2SO4
Replies: 2
Views: 4466

Re: Balance: C4H12N2SO4 + NaOH -> C4H10N2 + Na2SO4

gtg244u wrote:

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 C4H12N2SO4 + NaOH = C4H10N2 + Na2SO4
Can anyone help me with this?
Just add water.

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XH2SO4 + 2 NaOH = X + Na2SO4 + H2O

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 C4H12N2SO4 + 2 NaOH = C4H10N2 + Na2SO4 + H2O
by GrahamKemp
Thu Aug 18, 2016 6:23 pm
Forum: Chemistry forum
Topic: Balance algebraic method
Replies: 2
Views: 3620

Re: Balance algebraic method

I need help... Sb2O3+KIO3+HCl+H2O=HSb(OH)6+KCl+ICl thanks. RedOx is happening! Get those spectator ions to safety. They're causing a distraction. Move the protons and water away too. Strip down to the bare essentials. Sb2O3 + IO3{-} + ? = Sb(OH)6&am...
by GrahamKemp
Thu Aug 18, 2016 5:22 pm
Forum: Chemistry forum
Topic: Hi! I need help please
Replies: 1
Views: 3609

Re: Hi! I need help please

Candelaria wrote:

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(NH4)2Cr2O7 + H2O2 + KOH --> K3[Cr(O2)4] + O2 + NH3 + H2O
Please give me instructions on balancing chemical equations
Thanks!
What is

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K3[Cr(O2)4]
:?:
by GrahamKemp
Thu Aug 18, 2016 4:53 pm
Forum: Chemistry forum
Topic: KIO3 + KHSO3 -> ?
Replies: 1
Views: 4030

Re: KIO3 + KHSO3 -> ?

KIO3 + KHSO3 Well, de]K{+}[/code] is most likely going to be a spectator ion, so that leaves reactants: IO3{-}+ HSO3{-} The liable products of these are: I{-} + H{+} + SO4{2-} So we need to balance: x IO3&...
by GrahamKemp
Thu Aug 18, 2016 4:33 pm
Forum: Chemistry forum
Topic: Steps to balance equation
Replies: 2
Views: 4317

Re: Steps to balance equation

Indeed. Or by hand, from:

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x Fe + y HC2H3O2 = x Fe(C2H3O2)3 + z H2
Start with the O (and C): 2y = 6x => y=6, x=2

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2 Fe + 6 HC2H3O2 = 2 Fe(C2H3O2)3 + z H2
Look to the H: 24 = 18 + 2z => z=3

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2 Fe + 6 HC2H3O2 = 2 Fe(C2H3O2)3 + 3 H2
by GrahamKemp
Thu Aug 18, 2016 3:50 pm
Forum: Chemistry forum
Topic: Redox balance
Replies: 3
Views: 12172

You have a Neutral charge on LHS, and a load of Negative charges on RHS. So yes, you are wrong. Please balance those charges. Sb + 2 H2O = SbO2{-} + 4 H{+} + 3 e{-} O2 + 2 H{+} + 2 e{-} = H2O2 --- 3 O2 + 2 Sb +...
by GrahamKemp
Wed Oct 22, 2014 9:11 pm
Forum: Chemistry forum
Topic: question please answer fast
Replies: 2
Views: 2835

Tip: There's an easy to use pH calculator on the "Chemistry Tools" page

http://www.webqc.org/phsolver.php

You'll want to enter values for:

HCl pKa=-10 c=0.1 v=0.1

NaC2H3O2 Ka=1.0E-5 Kb=5.6E-10 c=0.1 v=0.15