Answer:
pH = 11.60
Explanation:
When we add a base, we are increasing [OH⁻], so the pH will be totally basic.
pH of water = 7
Basic pH > 7
We are adding 2 M . 1 mL = 2 mmoles
2 mmoles of OH⁻ are contained in 501 mL of total volume.
[OH⁻] = 2 mmol / 501 mL = 3.99×10⁻³ M
- log 3.99×10⁻³ M = 2.39 → pOH
pH = 14 - pOH → 11.61
Water equilibrium
2H₂O ⇄ H₃O⁺ + OH⁻ Kw = 1×10⁻¹⁴
NaOH → Na⁺ + OH⁻
Extrusive Rocks. Igneous rocks which form by the crystallization of magma at the surface of the Earth are called extrusive rocks. They are characterized by fine-grained textures because their rapid cooling at or near the surface did not provide enough time for large crystals to grow.
This dissociation occur because:
O had to bond with H due to the Hydrogen bonding rule, which will form OH~ (Hydroxide).
K is more attracted to Hydroxide than Cl, so it will depart Cl and bond with OH~.
that leaves a H and a Cl, which one has a positive charge and the other has a negative, so they will bond and form Hydrochloric Acid.
For each pair of molecules given in the table below, the correct relationships are identified as follows.
<h3>The relationships between the molecules are given as?</h3>
- These are structural isomers. This is because, they have the same molecular formula (C₆H₁₂) but possess varying structures.
- The given pair of molecules posses similar formula (C₄H₁₀O) and can be superimposed on one another via rotation of the entire molecule, hence they are identical isomers.
- In this case the pair of molecules possess similar molecular formula (C₄H₁₀O) and similar arrangement of atoms. Hence, they are identical isomers.
- This case also features structural isomers. They both contain the same carbon chain with similar formula - C₃H₆BrCl
- These pair as identical isomers. They are also derived from C₃H₆BrCl.
- This pair are called stereoisomers isomers. This is because they contain the same about of molecules but are different in the position of the alcohol (-OH) group. But more importantly, the position of the bonding is the same.
- This set is a functional pair. This is because the composition of the molecules present in each case are different.
- This is also a functional pair.
<h3>What is a molecules?</h3>
A molecule is a bonded collection of atoms that represents the smallest fundamental unit of a chemical compound that may participate in a chemical process.
Learn more about a molecule at:
brainly.com/question/473667
#SPJ1
Answer:
170 g
Explanation:
Moles of Oxygen gas :
Given, Mass of Oxygen = 80.0 g
Molar mass of Oxygen gas= 31.998 g/mol
The formula for the calculation of moles is shown below:
Thus,
The reaction between Al and O₂ is shown below as:
4Al + 3O₂ ⇒ 2Al₂O₃
From the reaction,
3 moles of O₂ on reaction forms 2 moles of Al₂O₃
1 mole of O₂ on reaction forms 2/3 moles of Al₂O₃
2.5 moles of O₂ on reaction forms (2/3)*2.5 moles of Al₂O₃
Moles of Al₂O₃ = 1.6667 moles
Molar mass of Al₂O₃ = 102 g/mol
Mass = Moles * Molar mass = 1.6667 * 102 g = 170 g
