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almond37 [142]
3 years ago
12

What is the empirical formula of C6H18O3? CH3O C2H5O C2H6O C2H5O5

Chemistry
2 answers:
denis-greek [22]3 years ago
6 0

What is the empirical formula of C6H18O3?

CH3O

C2H5O

C2H6O CORRECT ANSWER

C2H5O5

I took the test and C) was correct

andreyandreev [35.5K]3 years ago
3 0

So to find the empirical formula you have to simplify. What is something you can take out of all three? The number three, so divide everything by three leaving you with (C2H6O). I hope this helped!

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       F
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3 years ago
For 100.0 mL of a solution that is 0.040M CH3COOH and 0.010 M CH3COO, what would be the pH after adding 10.0 mL 50.0 mM HCl?
damaskus [11]

Answer:

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Explanation:

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<em>Where pH is the pH of the buffer, pKa is the pKa of acetic acid (4.75), and [A-] could be taken as the moles of the conjugate base and [HA] the moles of thw weak acid.</em>

<em />

To solve this question we need to find the moles of the CH3COOH and CH3COO- after the reaction with HCl:

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<em>And moles of CH3COOH are its initial moles + moles HCl added</em>

<em />

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Moles CH3COO- = 0.003500 moles

pH is:

pH = 4.75 + log [0.000500] / [0.00350]

<em>pH = 3.90</em>

<em />

<h3>The pH of the buffer is 3.90</h3>
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