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RUDIKE [14]
3 years ago
12

Describe the possible components of a buffer solution. (select all that apply.)strong base and its conjugate acidweak base and i

ts conjugate acid
Chemistry
1 answer:
Viktor [21]3 years ago
6 0
Missing question:

a) strong base and its conjugate acid.

b) weak base and its conjugate acid.

c) strong acid and strong base.

d) weak acid and its conjugate base.

e) weak acid only.

f) weak base only.

g) strong acid and its conjugate base.

Answers are: 

b) weak base and its conjugate acid. For example weak base ammonia (NH₃) and its conjugate acid ammonium ion (NH₄⁺).

d) weak acid and its conjugate base. For example weak acetic acid (CH₃COOH) and its conjugate base CH₃COO⁻.

Buffer solution changes pH very little when a small amount of strong acid or base<span> is added to solution.</span>


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When 91.5 g of isopropyl alcohol which has an empirical formula of C3H8O is burned in excess oxygen gas, how many grams of H2O a
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Answer:

109.7178g of H2O

Explanation:

First let us generate a balanced equation for the reaction. This is illustrated below:

2C3H8O + 9O2 —> 6CO2 + 8H2O

Next we will calculate the molar mass and masses of C3H8O and H20. This is illustrated below:

Molar Mass of C3H8O = (3x12.011) + (8x1.00794) + 15.9994 = 36.033 + 8.06352 + 15.9994 = 60.09592g/mol.

Mass of C3H8O from the balanced equation = 2 x 60.09592 = 120.19184g

Molar Mass of H2O = (2x1.00794) + 15.9994 = 2.01588 + 15.9994 = 18.01528g/mol

Mass of H2O from the balanced equation = 8 x 18.01528 = 144.12224g

From the equation,

120.19184g of C3H8O produced 144.12224g of H20.

Therefore, 91.5g of C3H8O will produce = (91.5 x 144.12224) /120.19184 = 109.7178g of H2O

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