Reaction Definition and 1000 Threads

tert-butyl bromide reacts with HOH to give HBr and the corresponding alcohol , C C-C-C OH But tert-butyl alcohol reacts with HCl to give tert-butyl chloride. HBr is a "stronger" acid than HCl. Is this part of the explanation of the different reactions?

Homework Statement What is the equation for the reaction of a alpha particle and beryllium with production of one neutron Homework Equations Use an a chem equation The Attempt at a Solution The masses are 4 + 9 = 1 + x, so x = 12. The atomic numbers (protons) are 2 + 4 = 0 + x...

I was given 2Na + 2H2O → 2NaOH + H2 My only question here is whether the Na on the reactants side is 0 because it is alone? And is it the same thing for the H2 that is alone on the products side? So if were the case Na would oxidize and H would reduce?

Homework Statement The concentration of the reactant A has been studied as a function of time. By a suitable plot of the data below, show that the reaction is first order, and determine the rate constant, k, and the half-life, t1/2. Use the integrated rate equation to determine [A] when t =...

What exactly is a double displacement reaction? I searched my textbook for the term--yes, I did check the glossary first--and it proved futile. My teacher alludes to this term and even has one power point slide to it. It says, "When an aqueous solution of sodium carbonate is added to an aqueous...

Please teach me this: What prevent the reaction changing leptons to hadrons and vice versa?.Because both leptons and hadrons are ruled by electro-weak interaction,so why the reaction can not happen? Thank you very much in advance.

1. It has been found by experiment that the molar mass of the Rn nucleotide is 221.9703 g and that of the Po nucleotide is 217.9630 g. The molar mass of helium is 4.00150 g. Given this information, and the information from the class, calculate the energy evolved, in kJ, for the following nuclear...

What is the reaction force for a tension force. For example someone pulling a brick by a rope.

Homework Statement For each reaction, give balanced chemical equations or NR (no reaction) and rationalize your answers in terms of trends in oxidation states. Calculate net potential for the reactions: a) Fe2+(aq) + Co3+ (aq) (acidic conditions) →b) CrO42−(aq) + MoO2(s) + H+ (acidic...

is it possible to have a triple replacement type reaction? I know of single and double replacement but what if you mix sodium carbonate, magnesium hydroxide, and potassium sulfate all together (this is all made up just for an example). would all the different ions mix to form all possible...

I thought I understood it cause I always had the right answer ever since I learned about it. But now my friend asked me a question about why does a piece of chalk break if you put a heavy thing on it, say a car. If we just think about action and reaction, the forces have to be along a...

Homework Statement Topic Homework Equations http://en.wikipedia.org/wiki/Horner%E2%80%93Wadsworth%E2%80%93Emmons_reaction This is basically a variation of a wittig reaction. The Attempt at a Solution I'm trying to understand this concept, because the chemistry gods have decided that it...

Homework Statement See attachment there is reaction.why --OH attach to 2nd carbon. why not it attach first carbon(from left). Homework Equations steric hindrance The Attempt at a Solution there seems greater steric hindrance in right carbon(2nd from left) than left one.

Homework Statement Human reaction times is sometimes worsened by alcohol. How much farther would a drunk driver's car travel before he hits the breaks than a sober drivers car? assume both cars are initially traveling 49 mi/h the sober driver takes .33s to hit the brakes and the drunk driver...

This is the link for the assignment: http://imageshack.us/f/840/assignmentsynthesisofev.jpg/ Homework Statement Given in the link Homework Equations Why would the proposed synthesis be successful if the reaction stopped after 2 hrs? How does H attack compound 2 to create compound...

I am having trouble understanding what exactly happens in an exothermic reaction. Specifically, I need to answer the following question: In an exothermic reaction: a) the kinetic energy increases and the potential energy decreases. b) the kinetic energy and the potential energy decrease...

First of all, I'm asking here for advice since I've seen how the members of this forum answer in a mature manner (I've read some problems like mine in the forum, however, I've not contributed some). your advice is very much appreciated (please don't mind the different field of study) I've...

Suppose you have a reaction wheel or a control moment gyroscope on your spacecraft for attitude control. This would be a self contained unit, with 3-axis control. Either device utilizes the conservation of angular momentum, trading angular momentum between the unit and the spaceship frame as...

hi, The drawing show 2 transformers T1 and T2. Each primary of transformer is at fixed voltage (110 volt for example), but one transformer is with 0° phase and other with 180° phase. The secondary of each transformer has the same charge and the same current. The idea is to cancel the flux from...

consider 3A + 5B ----> 4C + 2D if this is an elementary process the rate of reaction is given as r = k [A]3 [ B ]5 , where k is rate constant, [x] are concentrations so my question is , why is the rate of production of A = 3 times the rate of reaction? since the rate of reaction has...

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...

Does sodium reacting with water produces sodium hydroxide directly or produces sodium oxide first then hydroxide ?

The problem statement says to derive the concentration as a function of time for the general three species first order reactions. I have attached an image of the problem, so see the image for the reaction. I have written the reaction rates for all the reactions but I am having trouble...

A 9g sample of solid NH4Cl is heated in a 4L container to 924.4oC and decomposes according to the following equation. NH4Cl(s) -> HCl(g) + NH3(g) at equalibrium the partial pressure of NH3 (g) is 1.346 atm. Calculate the equilibrium constant for Kp for this reaction Homework Equations...

Please help Due in 2 hours. Statics machine equilibrium: reactions- too many unknowns Homework Statement The woman using the lat pulldown machine is holding the 80-lb weight stationary in the position shown. What are the reactions at the built-in support E and pin support F? (A and C are...

Latley, I have been trying to conduct an experiment dealing with Potassium Carbonate and water. But first I need to get everything down on paper. So, what is the reaction between water that is 145 degrees and 30 grams of Potassium Carbonate? Would it help if I put the PC in the water and then...

A chemical Reaction A-->B is carried out in a closed vessel. The following data are taken for the concentration of A, Ca (g/L), as a function of time, t(min), from the start of the reaction. A proposed reaction mechanism predicts that Ca and t should be related by the expression ln...

Two lightweight metal spheres are suspended near each other from insulated string. One sphere has no net charge, the other has a net charge. The spheres will? Homework Equations None The Attempt at a Solution I know opposite charges attract and similar charges repel, but not sure...

This question is about momentum in a system when an electron and positron annihilate each other. Consider the following, please: SITUATION Consider a system of 3 particles. They are in motion (which I will explain with Earth as the geometric frame). The electron (#1) is moving, coming from...

Homework Statement Histidine is an amino acid. It is not soluble in water but it will dissolve in water when dilute sodium hydroxide is added. The question has two parts to it: part-a) Write an equation for the reaction that occurs between histidine and dilute sodium hydroxide...

I'm in my 3rd year of a chemistry course so its fairly ridiculous that I can't balance equations. I can balance simple equations in my head in seconds but what I need is an algorithm that I can use to balance any equation I will ever encounter. Can any of you teach me a method for balancing...

Homework Statement Basically I have to show the product of this reaction: Homework Equations Grignard reaction mechanism: The conversion of a ketone to an alcohol The Attempt at a Solution My attempt of this reaction produces an alcohol with two ethyl groups attached to...

I thought heat increased reaction rates, meaning that when something is at equilibrium, it should increase both the forward and reverse reaction rates... Is this wrong? Then why does Le Chatelier's principle predict that a temperature increase favors the endothermic direction?

For a piece of coursework I have to design a shaft for a windturbine. The shaft has a load on one end due to the rotor blades and a load on the opposite end due to a sprocket which is chain linked to a generator. The supports are bearings in between the two loads, as shown in this drawing...

Homework Statement n-butyl alcohol was reacted with potassium bromide in the presence of concentrated sulphuric acid and water. 1) Is hydrobromic acid involved in this reaction? If yes, how so? 2) Is this reaction SN1 or SN2? What is the mechanism? 3) What is the purpose of the...

i am working on a hoop and its 550mm diameter, 7mm thickness. I applied 1mm displacement from its upper face which is normal to its direction.Stress is 730Mpa which is normal but the total reaction force is 0.0004N which is too low. where do i make the mistake.Material is structural steel...

Classical charged particle's reaction to a retarded field This is something I've been curious about for a while -- every once in a while, I'll see some random reference to it in an article, but I never feel like it's the whole story. The situation is this -- you have a moving classical...

Dear all, I am not an expert of Chemistry and I would like to know if there is a reversible reaction that can be activated only by thermal energy. The result of the reaction should be something which can be brough again to the initial state, releasing again the thermal energy stored. I was...

Homework Statement Reaction time can be crucial in avoiding a car accident. You are driving at 75 km/h [N] when you notice a stalled vehicle 48.0m directly ahead of you. You apply the brakes, coming to a stop just in time to avoid a collision. Your brakes provided a constant acceleration of...

Hello, I'm making a question on the explosion of hydrogen/oxygen. All the things you need to know are the following. The formation of H-radicals in the H2-O2 mixture are responsible for ignition of the explosion. This means the H-radicals need to be formed faster than they are destructed to...

Homework Statement http://img101.imageshack.us/img101/9546/3dstats.jpg Pole AB is supported at point A by a pin joint, and held at point B by two wires, BC and BD, as described in the drawing. At point B acts on the pole force F which equals 500 [N]. The force F acts on a horizontal...

Homework Statement The apparatus below shows an experiment to investigate the speed of reaction between lithium and water. A piece of lithium is wrapped in steel gauze and placed in a beaker of ]water. The volume of gas collected in the measuring cylinder is measured at 10s time interval...

I have learned that the primers in PCR are added to the DNA in the annealing phase, but what exactly do these primers do to the DNA? Thank you

Which fundamental force mediates the reaction \pi^+ + D \rightarrow p + p? My initial assumption was the strong force because states only feature quarks (i.e. there are no leptons) but looking at it again I'm not 100% sure. Do I need to include colour factors? Could it be a neutral current...

Redox reaction...with a twist! In the chlor-alkali process OH–(aq) and Cl2(g) are produced by the electrolysis of a saturated solution of sodium chloride. Explain why chlorine gas rather than oxygen gas forms at the anode. The solution to the question has the word "Overpotential" and I...

Anyone on this forum know what the highest-probability fission chain reaction of plutonium-239 is? Mike Fontenot

Just need some clarification as to whether or not I'm doing this right. 1 drop HCl and several drops KMnO4 added to 2mL NaHSO3. HSO3- → HSO4- + 2e- MnO42- + 4e- → MnO22- 2HSO3-(aq) + MnO42-(aq) → 2HSO4-(aq) + MnO22-(aq) A few questions: -Since NaHSO3 is not an acid, the hydrogen atom...

Hello, I need a few compounds that i can use that are soluble with water that causes the water to cool, so that if ingested it will not do any harm. your advice would be greatly appreciated, also if you may include a chemical formula if it is known. THANK YOU. P.S. this is out of interest...

Homework Statement What are the two final products when cis-2-butene reacts with HBr and CH3OH? Homework Equations Reactions of Alkenes.The Attempt at a Solution I'm not sure if the HBr will attack the double bond first or if the OH on methane will take the H off HBr and create a radical...

There's a catalyst pellet in a reactor and I'm supposed to prove an equation for the maximum temperature which is: Tmax=Ts +[(-H)*(D*Cas)]/k First thing I did was develop an Energy Balance across the spherical catalyst and I got the following equation: (1/r^2)*d/dr(r^2*k*dT/dr) +...