Fe + 3NaBr → FeBr3 + 3Na
The Na is replaced by the Fe atom.
Answer:
increase in the size of fruits and vegetables
Answer: HCl
Explanation:
Br₂ is a diatomic molecule meaning that there are no permanent dipole-dipole forces between these two. There are VDW forces between each molecule but these are weak as they are not differing in electronegativities, so this is not the answer.
Ne is a single element, there are no attractive forces.
N₂ is also a diatomic molecule, and for the same reasons as Br₂ it is also not the answer.
Between HCl and HBr, HCl has a greater electronegativity difference.
This is because on the electronegativity scale, H is 2.1, Cl is 3.0, and Br is 2.8. Make sure to refer to the Pauling electronegativity scale for these types of questions - you may be required to just remember that certain values are higher than others (the most electronegative elements on the periodic table are the futherest up and right - so the most electronegative element is fluorine).
As H and Cl have the greatest electronegativity difference, they have the largest dipole-dipole forces.
Answer:
TRUE: The equivalence point is where the amount of acid equals the amount of base during any acid-base titration.
Explanation:
The point on the titration curve where the number of base equivalents added equals the number of acid equivalents is the equivalence point or neutralization point.
Chemical indicators are substances that change color thanks to a chemical change, depending on the pH of the medium, and thus indicate the end point or point of equivalence of an acid-base volumetry.
A titration curve occurs by representing the measured pH as a function of the added volume of titrant, where the rapid change in pH for a given volume is observed. The inflection point of this curve is called the equivalence point and its volume indicates the volume of titrant consumed to fully react with the analyte.
In some cases, there are multiple equivalence points that are multiples of the first equivalence point, as in the valuation of a diprotic acid, which indicates that its pH value will not always be 7.