Answer:
pH = 13.7.
Explanation:
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In this case, as we set up the chemical reaction between nitric acid and sodium hydroxide:
It is possible to realize there is a 1:1 mole ratio of acid to base, thus, we next compute the moles of each one:
In such a way, since the base react with more moles, there is leftover that we compute as shown below:
Afterwards, we compute the concentration given the new volume of 500 mL (0.500 L), as both volumes are added up:
Now, since sodium hydroxide is such a strong base, we compute the pOH first:
And the pH:
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Answer:
An Aqueous solution is used to reference any solution where water acts as the solvent. A lot of substances can dissolve in water including acids and bases and when they do this they become aqueous solutions.
Aqueous solutions are denoted by the symbol (aq) in solutions as shown in this reaction below where Sodium Chloride is dissolved in water;
NaCl(s) → Na+(aq) + Cl-(aq)
Aqueous solutions are capable of conducting electricity if electrolytes are the ones dissolved in the water.
There are however some substances that cannot form aqueous solutions because they cannot dissolve well in water for example, organic substances like oils.
See Figure 4 below.
1. Draw a 7-carbon chain and number the carbon atoms (<em>Figure 1</em>).
2. Insert a triple bond between atoms 5 and 6 (<em>Figure 2</em>).
3. Attach a phenyl group to atom 3 (<em>Figure 3</em>).
4. Attach a Br to atom 1 (Figure 4).
And you have your structure.
<em>Note</em>: The C≡C triple bond takes <em>priority</em> in the naming, so we must number the chain from the other end. The correct name is
<em>7-bromo-5-phenylhept-2-yne </em>(all one word).