Answer:
C₄F₈
Explanation:
Using their mole ratio to compute their mass
molar mass of carbon = 12.0107 g/mol
molar mass of fluorine gas = 37.99681
let x = mass of carbon
given mass of fluorine = 1.70 g
x / 12.01067 = 1.70 / 37.99687
cross multiply
x = ( 1.70 × 12) / 37.99687 = 20.4 / 37.99687 = 0.53688 g
mass of one mole of CF₂ = 0.53688 + 1.70 = 2.23688 g
number of mole of CF₂ = 8.93 g / 2.23688 = 3.992 approx 4
molecular formula of CF₂ = 4 (CF₂) = C₄F₈
Hi, did you ever get the answers?
Dipole-dipole interactions occur when the partial charges formed within one molecule are attracted to an opposite partial charge in a nearby molecule. Polar molecules align so that the positive end of one molecule interacts with the negative end of another molecule.
So the answer is, D.) dipole to dipole.
Keto-enol tautomerism
<u>Explanation:</u>
Phenolphthalein is an indicator (C₂₀H₁₄O₄), which is utilized to find the volume in the titration of acid and base, Depending on the pH value the indicator, changes its color from colorless in acids to pink in basic medium.
It is a weak acid, losses a (H⁺) proton in solution, that is colorless, whereas the corresponding anion is pink in color.
This change in color of the molecule is not only defined by the addition of a base or an acid, but also with the structure of the indicator, which leads to tautomerism called as keto-enol tautomerism. If a molecule has 2 (-OH) hydroxyl groups as well as 1 (C=O) carbonyl group, exhibit an equilibrium among both the groups. Because of this change, structure of the indicator changes and so color also changes.