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Marizza181 [45]
3 years ago
10

Why does the pH of the acid solution initially increase very slowly when metal is first added to the acid solution, but graduall

y increase at a faster rate as the reaction proceeds to completion?
I thought it may be because the metal is just then being completely dissolved but that didn't make sense because we were instructed to wait until the first little scoop of the metal powder was dissolved before adding the next bit.
Chemistry
1 answer:
aleksandr82 [10.1K]3 years ago
5 0
When a metal reacts with an acid, say HCl, it reacts with the H+ atoms of the acid to produce H2 gas and chloride ions. Since pH is the negative log of H+ concentration, then it would sensibly decrease because it was used up. The metal oxide would form a coating over the metal. However, as the reaction proceeds, the acid corrodes the metal and exposes a purer surface removing the coating. Thus increasing the concentration of H+.
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59.78175 kPa is the pressure inside the container when a cylinder at 48.0 atm pressure and 17.0°C releases 35.0 mL of carbon dioxide gas into a 4.00 L container at 24.0°C.

<h3>What is an ideal gas equation?</h3>

An ideal gas equation states the relationship between the moles of the substance, temperature, pressure, and volume. The ideal gas equation is given as, PV=nRT

Given data:

P_1=48.0 atm

V_1=3T_1=17.0°C

P_2=?

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T_2=24.0°C

\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}

\frac{48.0 atm X 35.0 mL}{17.0} = \frac{P_2X 4000 ml L}{24.0}

P_2= 0.59 atm = 59.78175 kPa

Hence, 59.78175 kPa is the pressure inside the container when a cylinder at 48.0 atm pressure and 17.0°C releases 35.0 mL of carbon dioxide gas into a 4.00 L container at 24.0°C.

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4 0
2 years ago
Fe(NO3)3<br> Percent composition
Scilla [17]

Answer:

Fe: 23.1%

N: 17.4%

O: 59.5%

Explanation:

You take the grams that each weigh on the periodic table and add it all up. Afterward you create fractions of each over the whole. (Example: Fe/Fe+N+O) then you divide and turn that decimal into a percentage.

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Lubov Fominskaja [6]

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A. 0.1 M HNO3 (aq) solution contains more H+ than HF(aq) solution

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3 years ago
which is the false statement about c14? a. it is a stable isotope. b. it is a radioactive isotope. c. it is present in all livin
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The false is A

as C-14 is an unstable isotope that is radioactive and is present in all living things i can be used to carbon date things 

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3 years ago
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Plz help for brainlieast answer
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Answer:

Na+

Explanation:

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8 0
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