This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar): CH_3CO_2H An analytical chemist has determined by measurements that there are 0.054 moles of oxygen In a sample of acetic acid. How many moles of hydrogen are in the sample? Be sure your answer has the correct number of significant digits.

0.108mol of Hydrogen

Explanation:

The formula for the compound is: CH3COOH

From the formula of the compound,

There are 2moles of oxygen and 4moles of Hydrogen.

If for every 2moles of oxygen, 4moles of Hydrogen is present.

Then, for 0.054 moles of oxygen = (0.054 x 4)/2 = 0.108mol of Hydrogen is present

For 0.027 moles CH3COOH we have 0.108 moles H ≈ 1.1 *10^-1 moles H

Explanation:

Step 1: Data given

Acetic acid = CH3COOH

Number of moles oxygen in the sample = 0.054 moles

Step 2: calculate moles CH3COOH

In 1 mol CH3COOH we have 2 moles O

For 0.054 moles Oxygen we have 0.054/2 = 0.027 moles CH3COOH

Step 3: Calculate moles H

In 1 mol CH3COOH we have 4 moles H

For 0.027 moles CH3COOH we have 4*0.027 = 0.108 moles H ≈ 1.1 *10^-1 moles

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.