Recent content by reising1
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What Happens When NaOH is Added to Quinizarin?
Oh, so you think just one group would deprotonate?- reising1
- Post #7
- Forum: Biology and Chemistry Homework Help
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What Happens When NaOH is Added to Quinizarin?
If it's a strong base, it will accept protons. So, the OH groups will deprotonate?- reising1
- Post #5
- Forum: Biology and Chemistry Homework Help
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What Happens When NaOH is Added to Quinizarin?
According to this website: http://www.drugfuture.com/chemdata/quinizarin.html the pKa is 9.51. So it's not very acidic. So, what does this mean in terms of my question?- reising1
- Post #3
- Forum: Biology and Chemistry Homework Help
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What Happens When NaOH is Added to Quinizarin?
Homework Statement Given Qunizarin, and if we add NaOH, what would the resulting compound look like? Homework Equations Here is what quinizarin looks like: http://upload.wikimedia.org/wikipedia/commons/thumb/c/c9/Quinizarin.svg/620px-Quinizarin.svg.png The Attempt at a Solution I'm...- reising1
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- Chemistry
- Replies: 7
- Forum: Biology and Chemistry Homework Help
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Salicylic Acid from Methyl Salicylate
Oh, okay, so I just have big benzene ring with the sodium and water. But what about the filtrate?- reising1
- Post #3
- Forum: Biology and Chemistry Homework Help
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Salicylic Acid from Methyl Salicylate
Homework Statement In a lab, we are synthesizing salicylic acid fro methyl salicylate. The following steps are used: 1) Add NaOH to Methyl Salicylate 2) Heat solution 3) When solution has cooled, add HCl, then filter product My question is, what is present in the filtrate when filtering...- reising1
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- Acid
- Replies: 2
- Forum: Biology and Chemistry Homework Help
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Neutralizing a basic reaction with HCl
So if I am just trying to neutralize, and if I have 120 mmoles of NaOH, then I would need 120 mmoles of HCl to neutralize, right?- reising1
- Post #5
- Forum: Biology and Chemistry Homework Help
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Neutralizing a basic reaction with HCl
No, I am supposed to calculate the number before coming to lab.- reising1
- Post #3
- Forum: Biology and Chemistry Homework Help
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Neutralizing a basic reaction with HCl
Homework Statement I am reacting methyl salicylate with sodium hydroxide to produce salicylic acid. However, first it is important to add acid to neutralize the very basic solution. My question is, when determining the amount of HCl to add, do I need to take into consideration the methyl...- reising1
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- Hcl Reaction
- Replies: 7
- Forum: Biology and Chemistry Homework Help
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Finding the equivalent of a compound
Homework Statement I am reacting methyl salicylate with sodium hydroxide to form salicylic acid. I am required to find the equivalent of sodium hydroxide, however I've never even heard of such a term. I didn't learn anything about "equivalent" in Intro Chem. Can anyone help? There are no...- reising1
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- Equivalent
- Replies: 1
- Forum: Biology and Chemistry Homework Help
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Solve Galvanic Cell: 0.050M Cu2+, AlCl3 0.0118M
Homework Statement Consider a Galvanic Cell composed of one half-cell containing 0.050 M copper(II) sulfate with a copper electrode and another half-cell containing an unknown concentration of aluminum chloride, AlCl3, and an aluminum electrode. a. Write the Nernst equation for this...- reising1
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- Cell Galvanic cell
- Replies: 1
- Forum: Biology and Chemistry Homework Help
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How to Calculate Ksp for Ferrous Oxalate in a Galvanic Cell?
Homework Statement A student constructs a galvanic cell with one half-cell containing 0.11M ferrous nitrate, Fe(NO3)2, and the other half-cell made from 50.0ml of 0.15M oxalic acid and 1.0ml of the 0.11M ferrousnitrate. Ferrous oxalate is only slightly soluble. The half-cells contain iron...- reising1
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- Cells Ksp
- Replies: 1
- Forum: Biology and Chemistry Homework Help
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Light Polarization at the Beach: Understanding Sunbathers' Vision
Homework Statement At a beach the light is generally partially polarized due to reflections off sand and water. At a particular beach on a particular day near sundown, the horizontal component of the electric field vector is 1.8 times the vertical component. A standing sunbather puts on...- reising1
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- Light Polarization Vision
- Replies: 1
- Forum: Introductory Physics Homework Help
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Calculating Maximum Resistance & Inductance for Theater Light Dimmer
I also know that P = V^2 / R Taking the ratio of Pmax to Pmin we get Pmax/Pmin = (Imax / Imin)^2 = ( (E/Zmax) / (E/Zmin) )^2 = 4 So (sqrt( (R^2) + ((w*Lmax)^2) ) / R)^2 = 4 which implies that Lmax = R / w (when we solve for Lmax in the above equation) Thus, pluggin in for P = V^2 / R we...- reising1
- Post #2
- Forum: Introductory Physics Homework Help
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Calculating Maximum Resistance & Inductance for Theater Light Dimmer
Homework Statement A typical "light dimmer" used to dim the stage lights in a theater consists of a variable inductor L (whose inductance is adjustable between zero and Lmax) connected in series with a lightbulb. The electrical supply is 120 V (rms) at 60.0 Hz; the lightbulb is rated as 120...- reising1
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- Inductance Light Maximum Resistance
- Replies: 1
- Forum: Introductory Physics Homework Help