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1 ) Predict whether the benzoin condensation would work with 4-tolualdehyde, 4- trifluoromethylbenzaldehyde, and 4-N ethylaminobenzaldehyde. Draw the structure of any products that are formed. 2 ) Draw the complete structure of thiamine hydrochloride and use an arrow pushing mechanism to show its acid-base reaction with hydroxide ion. 3 ) How might the presence of benzoic acid (a) affect the pH of the reaction and (b) affect the crystallization of benzoin at the end?
For the reaction below, which equation represents the rate of reaction. 6CH2O + 4NH3 (CH2)6N4 + 6H2O
What mass of NaOH could this buffer neutralize before the pH rises above 4?
What is the percent by mass of NaHCO3 in a solution containing 80 g of NaHCO3 dissolved in 600 mL of H2O?
Based on the ionization energies of the alkali metals, which alkali metal would you expect to undergo the least exothermic reaction with chlorine gas
a sample of gas is collected over water at a temperature of 28.0degc when the barometric pressure reading is 742.5
What is the concentration of [Br?] in a solution of 15 mL of 5 M HBr when 5 mL of water is added?
Calculate the amount of vitamin C in mg that are titrated by one milliliter of the 0.05N iodine solution.
The remaining white solid in the filter paper has ammonia water poured through it. This turns the precipitate in the filter paper black. The new filtrate is treated with hydrochloric acid (HCl), giving a white precipitate. What metal ion or ions a..
The pKa's of benzoic acid and 4-nitroanilinium hydrochloride are 4.2 and 1.0, respectively.
A nuclear reaction involves the hypothetical element X, which has an atomic number of 166, as a reactant. The 360X nuclide reacts with 5 neutrons yielding a nuclide of element Y along with, altogether, 2 beta particles, 5 neutrons, 3 alpha particl..
what is ture when equal masses of a and b are reacted?
For each of the following bonds, indicate the posotive ?^+ end and the negative ?^- end. Draw an arrow to show dipole for each: a) SI--Br; b) Se--F; c) Br--F; d) N--H; e) N--P.
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