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mr Goodwill [35]
3 years ago
9

An estser is the reaction product between: a. Alcohol and organic acid

Chemistry
1 answer:
san4es73 [151]3 years ago
3 0
An ester is the reaction product between A. alcohol and organic acid. 
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A solution containing 75.0 mL of 0.150 M strong acid (HCl) is titrated with 75.0 mL of 0.300 M strong base (NaOH). What is the p
Alborosie

Answer:

12.875

Explanation:

Balanced equation of the reaction:

HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O(l)

mole of acid = mole of base

75 × 0.150 = volume of base needed × 0.3

volume of base needed = 37.5 ml

excess OH = 0.3 × 37.5 ml / 150 ml where total volume = 75 ml + 75 ml = 150 ml

excess OH = 0.075 M

pOH = - log (OH⁻) = - log (0.075 M) = 1.125

pH + pOH = 14

pH = 14 - pOH = 14 - 1.125 = 12.875

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3 years ago
The atomic mass of an element is equal to the:
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The atomic mass is equal to the number of neutrons, plus the number of protons, in the nucleus of the atom
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What is the outcome of all chemical changes when two substances are combined?
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D

Explanation:

Because when you combine chemical substances they create a new substance unlike physical substances .

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3 years ago
Which of the following will dissociate into the largest number of ions in solution?
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Answer:D

Explanation:

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A chemist mixes 1.00 g CuCl2 with an excess of (NH4)2HPO4 in dilute aqueous solution . He measures the evolution of 670 J of hea
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Answer:

\Delta H will be 90054 J

Explanation:

Number of moles = (mass)/(molar mass)

Molar mass of CuCl_{2} = 134.45 g/mol

So, 1.00 g of CuCl_{2} = \frac{1.00}{134.45}mol of CuCl_{2} = 0.00744 mol of CuCl_{2}

0.00744 mol of CuCl_{2} produces 670 J of heat

So, 1 mol of CuCl_{2} produces \frac{670}{0.00744}J of heat or 90054 J of heat

4 0
3 years ago
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