Aluminum to hydrogen gas ratio is 2 : 3 by looking at the coefficients of aluminum on the reactant side and hydrogen gas on the product side.
So from 2.0 mol of Al, 3.0 mol of H2 would form.
The material of object. The size of object. The surface are of the object
Answer:
2-naphtol is a weak acid and benzoic acid is a stronger acid. NaHCO3 is a weak base, that will only react with a strong acid like benzoic acid. 2-napthol is not soluble in sodium bicarbonate.
Explanation:
2-naphtol is a phenol. Phenol is made of a benzene attached to an OH group. So, it is a (big) organic molecule, and a little non-polar group. The conjugated (or non-localised) electrons in the benzene ring pull electrons away from the OH group. It makes it harder for the oxygen to steal the hydrogen's electrons and become O-.
A phenol is acidic in nature because of this H+ releasing. This will result in forming a phenoxide.
Benzoic acid is a carboxylic acid and is more acidic than a phenol. Since it's acid it will also release H+ ion, in this case to form carboxylate which is more stable than phenoxide. The phenoxide is resonance stabilised.
The negative charge , in carboxylate, is delecoalised on the negatively charged O atom what makes it more stable than phenoxide. Compared to carboxylic acid. ( or benzoic acid) phenol ( or 2-naphtol) is a weak acid.
NaHCO3 is a weak base and will only react with a strong acid like carboxylic acid. A naphtol is not strong enough to react with the weak base NaHCO3.
This means 2-naphtol is a weak acid and benzoic acid is a stronger acid. NaHCO3 is a weak base, that will only react with a strong acid like benzoic acid. 2-napthol is not soluble in sodium bicarbonate.
<span>Equal amounts (moles of nitrogen and oxygen).
a. which gas has the higher partial pressure?
Partial pressure is proportional to the molar fraction of the gas.
Given that there are equal amounts, the molar fractions and the partial pressures are equal.
b. molecules of which gas have the higher average velocity?
The average velocity is inversely related to the square root of molar mass of the gas, then the gass with the lower molar mass will have the higher average velocity.
Molar mass of N2 = 2 * 14 g/mol = 28 g/mol
Molar mass of O2 = 2 * 16 g/mol = 32 g/mol
Then, N2 will have a higher average velocity.
c. the molecules of which gas effuses more quickly if a small hole was opened in the flask?
The effusion rate is inversely related to the square root of the molar mass, then the gas with the lower molar mass will effuse more quickly.
Therefore, N2 will effuse more quickly.
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