I drank orange juice too soon after brushing my teeth and my mouth feels awful! What causes that foul taste with this combination of toothpaste and orange juice? Is it a reaction between the oil of wintergreen in the toothpaste and the citric acid in the OJ? Is it something else? What's the expl...

When calculating the number of moles of calcium hydroxide formed from each mole of sodium hydroxide in the balanced reaction CaCl2 + 2 NaOH ® Ca(OH)2 + 2 NaCl, the best conversion factor to use is

I understand that ate complexes can result from the addition of carbanions to neutral aluminum alkyls. I was wondering what the balanced equation for this reaction is/what the structure would be in solid state - like does it dimerize $$\ce{2 LiCH2CH3 + Al2(CH2CH3)6 ->\ \ \ ?}$$

Are there any chemical reactions where in order to induce the reaction, you have to heat up a substance but after the reactions happens, the substance is much colder than even before you started heating it up?

This question (Is there a chemical that when added to water makes the water flash evaporate?) was posted 2 days ago, closed yesterday as being too broad and reopened today (14th Sep 2016 at 17:45Z, timeline). The question has never been edited so its contents are the same throughout. I wonder wh...

Is the reaction endothermic since its crystallization is exothermic?

I think what you are fundamentally saying is you are trying to relate classical thermodynamics to the molecular properties. It is best to have some firm familiarity with classical thermodynamics before attempting this. Classical thermodynamics does not require a molecular interpretation at all! (...

The reaction of $\ce{(C5H5)Fe(CO)2Cl}$ with an equimolar amount of $\ce{Li+[C6H5]-}$ gives a product. Draw its structure and apply the 18 electron rule. In a question I was given the molecular weight and percentages of each element in the compound. I worked out that there is $\ce{1 Fe}$, $\c...

Lets say we prepare a solution of HCl whit concentration of HCl to be 10^-8. Even on full dissociation (which it will, because it is a strong acid), the H+ ion concentration due to HCl is 10^-8. So shouldn't the pH be 8? Is there any factor I am missing? Does the properties of acids change at lo...

Consider an acidic solution with Hydrogen ion concentration, $\ce{[H+]}$ of $10^{-5}\:\mathrm{M}$. Since $\:\mathrm{pH} = -\log \ce{[H+]}$ the $\:\mathrm{pH}$ of solution is $5$. Suppose we dilute solution 10 times with water. Now, $\ce{[H+]}$ is $10^{-6}\:\mathrm{M}$ and $\:\mathrm{pH}$ is $6$. ...