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3 years ago

Acid donates a proton and produces a conjugate base.

Chemistry

1 answer:

Len [333]3 years ago

4 0

Answer: Yes! The statement is true

Explanation:

According to Bronsted-Lowry theory, an acid is a substance that donates a proton and produces a conjugate base while a base is a molecule or ion which accepts the proton.

An example of Bronsted-Lowry acid and base is Ethanoic acid, CH3COOH and hydroxide ion, OH- respectively as shown in the reaction below

CH3COOH(aq) + OH-(aq) <---> CH3COO-(aq) + H2O(l)

The Ethanoic acid acts as an acid by donating a proton to the hydroxide ion which accepts it, thus producing ethanoate ion, CH3COO- as a conjugate base.

Thus, the statement "Acid donates a proton and produces a conjugate base" is true.

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What is Most of an atom ?

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Either protons or neutrons

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When 200g water goes from a temperature 10C to 40C, is heat absorbed or released?

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how would it be possible to even be absorbed?? the answer is released.

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Be sure to answer all parts.

MrRissso [65]

Answer: The molarity of each of the given solutions is:

(a) 1.38 M

(b) 0.94 M

(c) 1.182 M

Explanation:

Molarity is the number of moles of a substance present in liter of a solution.

And, moles is the mass of a substance divided by its molar mass.

(a) Moles of ethanol (molar mass = 46 g/mol) is as follows.

$Moles = \frac{mass}{molar mass}\\= \frac{28.5 g}{46 g/mol}\\= 0.619 mol$

Now, molarity of ethanol solution is as follows.

$Molarity = \frac{moles}{Volume (in L)}\\= \frac{0.619 mol}{4.50 \times 10^{2} \times 10^{-3}L}\\= 1.38 M$

(b) Moles of sucrose (molar mass = 342.3 g/mol) is as follows.

$Moles = \frac{mass}{molar mass}\\= \frac{21.6 g}{342.3 g/mol}\\= 0.063 mol$

Now, molarity of sucrose solution is as follows.

$Molarity = \frac{moles}{Volume (in L)}\\= \frac{0.063 mol}{0.067 L} (1 mL = 0.001 L)\\= 0.94 M$

(c) Moles of sodium chloride (molar mass = 58.44 g/mol) are as follows.

$Moles = \frac{mass}{molar mass}\\= \frac{6.65 g}{58.44 g/mol}\\= 0.114 mol$

Now, molarity of sodium chloride solution is as follows.

$Molarity = \frac{moles}{Volume (in L)}\\= \frac{0.114 mol}{0.0962 L}\\= 1.182 M$

Thus, we can conclude that the molarity of each of the given solutions is:

(a) 1.38 M

(b) 0.94 M

(c) 1.182 M

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3 years ago

The mass and volume of each sample differ from the mass and volume of the other samples. Is it possible for each sample to conta

andrew11 [14]

<span>The mass and volume of each sample differ from the mass and volume of the other samples. Is it possible for each sample to contain 1 mol of each substance?

</span><span>C) Yes, because the number of moles is not dependent on the mass or the volume.</span>

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3 years ago

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A student weighs out a 6.64 g sample of , transfers it to a 500. mL volumetric flask, adds enough water to dissolve it and then

Vsevolod [243]

Answer:

the molarity of cobalt(II) fluoride in the resulting solution is = 0.137 M

Explanation:

Given that :

a student dissolves 6.64 g of CoF₂ into 500 mL of water

volume of the solution(water) = 500 mL = 0.50 L

The standard molar mass of CoF₂ is 96.93 g/mol

number of moles of CoF₂ = mass of CoF₂/molar mass of CoF₂

number of moles of CoF₂ = 6.64 g/96.93 g/mol

number of moles of CoF₂ = 0.0685 mol

The molarity of any given substance is known to be as the number of moles of solute dissolved in one litre of solution.

Thus ;

Molarity of cobalt(II) fluoride CoF₂ in the resulting solution is = number of moles / Volume in (L)

Molarity of cobalt(II) fluoride CoF₂ = 0.0685 mol/ 0.50 L

= 0.137 M

Thus ; the molarity of cobalt(II) fluoride in the resulting solution is = 0.137 M

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