Chemistry Forum

Or by hand: The equilibrium equation, where -log Ka=3.14 Ka = [H][F]/[HF] If there is no other source of hydronium ions than the acid (assuming a negligible contribution from water) then [H]=[F] If the initial concentra...

Look to the left. At the top of the menu is "Chemistry tool". Click this. Then follow the link on the next page to "pH calculator". In the text box labelled "Enter components of a solution to calculate pH" enter: HF pKa=3.14 c=0.56 Then click "Compute pH" and ...

Cu + HNO3 = Cu(NO3)2+ H2 For the reaction whats the oxidation half reaction and the reduction half reaction? And oxidizing and reducing agent :shock: The Nitrate ion is a spectator. The half reactions are: Cu (s) = Cu{2+}(aq) + 2 e{-&#1...

Aluminium Flouride and Hydroxide are both insoluble.

You've got two reactions. 2 NaHCO3(aq) + MgCl2(aq) = 2 NaCl(aq) + MgCO3(s) + CO2(g) + H2O(l) 2 KHCO3(aq) + MgCl2(aq) = 2 KCl(aq) + MgCO3(s) ...

When dealing with potentially explosive chemicals and the question is: "Is this reaction I know nothing about safe?" then the most likely answer is: "No."

Don't ever mix nitrates and glycerine. Protonation will eventually occur.

V2S3 + KMnO4 + H2SO4 = H4V6O17 + S + MnSO4 + K2SO4 + H2O This is a composite of two reactions. Separately balance each of the following: _ V2S3 + _ H2SO4 = _ H4V6O17 + _ S + _ H2O _ KMnO4 + _ H2SO4 + _ S = _ MnSO4 + _ K2SO4 + _ H2O --- FeS+HNO3-->Fe(NO3)3 + NO+H2O This is just impos...

We cannot see figure 9.4 on page 288.

Please provide more context.

You need to look up the enthalpy of formation tables.

http://en.wikipedia.org/wiki/Standard_e ... _formation

You can't balance it because the fermentation of ethanol is a reaction with acetic acid to produce ethyl acetate and water.
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For the other you begin by balancing the carbon, then balance the oxygen, and finally the hydrogen.

What is the limiting reactant for the following reaction given we have 2.6 moles of HCl and 1.4 moles of Ca(OH)2 ? Reaction: 2 HCl + Ca(OH)2 → 2H2O + CaCl2 + CaCl2 The limiting reactant is the one which can all be used, and this would leave excess of the other react...

I have a problem where .20 mol Na3PO4 reacts with .20 mol (NH4)2C204. However, I'm not sure if my reaction for a Bronsted-Lowry acid/base reaction should be: Na3PO4(s) + H4N+ 3C2O2{2-} + 2H2O= H3N + HOPO3{2-} + 3 Na2C2O4 When in doubt, remove the ...

The problem is that no such a compound: NO3 why? Electron accountancy. NO3 must have a negative charge. http://www.wiredchemist.com/anim-electron-dot-no3 However, check to see if nitrogen dioxide NO2 or nitrous oxide NO is produced by the reduction. 3 x ( 2 Zn(NO3)2 + Sn&...

Error: equation C16H34+C19H34O2+O2=CO2+H2O can be balanced in an infinite number of ways: this is a combination of two different reactions. Someone can help me? The idea is to burn a mix of two different fuels. Thx It should be apparent that the combined equations match the two fuels you are mixing...

I am in need of help with the chemical reaction below: NH[size=x-small]4[/size]Cl + Pb(OAc)[size=x-small]2[/size] Tip: when you use the [code][/code] tags you can not and do not need to u...