Hydrogen chloride gas can be prepared by the following reaction: 2NaCl(s) + H2SO4(aq) → 2HCl(g) + Na2SO4(s) How many grams of HC
l can be prepared from 2.00 mol H2SO4 and 2.56 mol NaCl?
1 answer:
Answer:
The correct answer is is option B
b. 93.3 g
Explanation:
SEE COMPLETE QUESTION BELOW
Hydrogen chloride gas can be prepared by the following reaction: 2NaCl(s) + H2SO4(aq) → 2HCl(g) + Na2SO4(s)
How many grams of HCl can be prepared from 2.00 mol H2SO4 and 2.56 mol NaCl?
a. 7.30 g
b. 93.3 g
c. 146 g
d. 150 g
e. 196 g
CHECK THE ATTACHMENT FOR STEP BY STEP EXPLANATION
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<u>Answer:</u> The mass percentage of carbon element is 63.57 %, hydrogen element is 5.96 %, nitrogen element is 9.28 % and oxygen element is 21.19 %
<u>Explanation:</u>
We are given:
A chemical compound having chemical formula of . This compound is made by the combination of carbon, hydrogen, nitrogen and oxygen elements.
1 mole of acetaminophen contains 8 moles of carbon atom, 9 moles of hydrogen atom, 1 mole of nitrogen atom and 2 moles of oxygen atom
Mass of carbon element =
Mass of hydrogen element =
Mass of nitrogen element =
Mass of oxygen element =
Mass of the compound = 151 g/mol
To calculate the percentage composition of an element in a compound, we use the equation:
........(1)
- <u>For carbon element:</u>
Putting values in equation 1, we get:
- <u>For hydrogen element:</u>
Putting values in equation 1, we get:
- <u>For nitrogen element:</u>
Putting values in equation 1, we get:
- <u>For oxygen element:</u>
Putting values in equation 1, we get:
Hence, the mass percentage of carbon element is 63.57 %, hydrogen element is 5.96 %, nitrogen element is 9.28 % and oxygen element is 21.19 %
Answer:
The correct answer is: pH= 4.70
Explanation:
We use the <em>Henderson-Hasselbach equation</em> in order to calculate the pH of a buffer solution:
Given:
pKa= 4.90
[conjugate base]= 4.75 mol
[acid]= 7.50 mol
We calculate pH as follows:
pH = 4.90 + log (4.75 mol/7.50 mol) = 4.90 + (-0.20) = 4.70