Answer:
The pH of the buffer solution = 8.05
Explanation:
Using the Henderson - Hasselbalch equation;
pH = pKa₂ + log ( [HPO₄²-]/[H₂PO4⁻]
where pKa₂ = -log (Ka₂) = -log ( 6.1 * 10⁻⁸) = 7.21
Concentration of OH⁻ added = 0.069 M (i.e. 0.069 mol/L)
[H₂PO4⁻] after addition of OH⁻ = 0.165 - 0.069 = 0.096 M
[HPO₄²-] after addition of OH⁻ = 0.594 + 0.069 = 0.663 M
Therefore,
pH = 7.21 + log (0.663 / 0.096)
pH = 7.21 + 0.84
pH = 8.05
Covalent example ch4 where carbon is covalently bonded with all 4 hydrogens
<span>For each inherited character an organism has two alleles for the gene controlling that character.. one form each parent</span>
Explanation:
Lime is an oxide of calcium(CaO). As a metallic oxide, it produces a basic solution when it reacts with water.
- The main reason why lime is added to lakes is to reduce acidity in the lake water.
Bottom muds in lakes are usually acidic and makes the water hypertonic. When lime is added, it reduces the pH of the water and causes acidity to reduce.
- Lime also helps to reduce the hardness of lake water to a good level.
- Lime also helps to release nutrients useful for photosynthesis of plants in the lake.
Learn more:
Neutralization brainly.com/question/5544078
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Hello there!
The answer is A. Carbon atoms can bond to other carbon atoms. In fact, carbon has four electrons to form four bonds with other atoms, including carbon. Carbon is the most common and used element in the world because it makes up all living things. All four main macromolecules also contain carbon.
Hope I helped! ^ω^
