Which of the following statements is not true regarding acids?Most fruits contain weak acids.
Acids react with bases in neutralization reactions to produce water.
Acids can be both highly and mildly corrosive.
Active metals will react with acids in double replacement reactions.
Answers
NH4+
increase the volume
add a catalyst
Related Questions
HELP PLEASE!!!!!Given that oxygen-16 and oxygen-18 both have an atomic number of 8, how many electrons, protons, and neutrons do these oxygen atoms contain?A) These oxygen configurations contain the same number of subatomic particles - 8 electrons, 6 protons and 10 neutrons. B) Any oxygen atom contains 8 electrons and 9 neutrons but these vary in the number of protons - 8 and 10 respectively. C) The oxygen allotropes contain 8 electrons but each contains a different number of neutrons and protons - 8 and 10 respectively. D) Both oxygen isotopes contain 8 electrons and 8 protons but each contains a different number of neutrons - 8 and 10 respectively.Copper has been used in electrical wiring for two hundred years. Identify which molecular level property does not contribute to copper's usefulness a material for wiring. A) high ductility B) high malleability C) high conductivity D) high crystallinityDescribe how light is emitted from an atom.A) As protons absorb energy they travel from the nucleus through the atom emitting light along the way. B) The light is emitted when energy from sunlight is absorbed by the atom to excite a neutron into a higher level. C) When the nucleus absorbs sunlight, photons are energized and move to a higher energy level and are then released. D) Light is emitted from an atom as an electron falls from an excited state to the ground state releasing a photon.During chemistry, Dan mixes two clear, colorless solution and mixing them produces a yellow precipitate in a clear, colorless final solution as shown by the chemical equation. Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq)What physical evidence indicates that there has been a chemical reaction?A) The solution changes color. B) Precipitate formation occurs. C) The beaker changes temperature. D) Gas bubbles form during the reaction.
In a chemical reaction, the mass of the products _____ the mass of the reactants.is greater than is less than is equal to has no relationship to
The pH scale for acids and bases ranges from _____.A.) 1-7 B.) 0-14 C.) 1-14 D.) 1-12
What is the correct formula for calculating pH?
B) 8
C) 10
D) 12
26) Which pH indicates a basic solution?
A) 1
B) 5
C) 7
D) 12
27)
Given the following solutions:
Solution A: pH of 10
Solution B: pH of 7
Solution C: pH of 5
Which list has the solutions placed in order of increasing H+ concentration?
A)
A, B, C
B)
B, A, C
C)
C, A, B
D)
C, B, A
28) Which of the following pH values indicates the highest concentration of hydronium ions in a solution?
A) pH = 1
B) pH = 2
C) pH = 3
D) pH = 4
29) As HCl(g) is added to water, the pH of the water solution
A) decreases
B) increases
C) remains the same
30) What is the pH of a 0.0001 M aqueous solution of HCl?
A) 1
B) 2
C) 3
D) 4
31) What is the pH of a 0.001 M HNO3 solution?
A) 1
B) 2
C) 3
D) 11
32) The [H3O+] of a solution is 1 × 10–8. This solution has a pH of
A) 6, which is acidic
B) 8, which is basic
C) 6, which is basic
D) 8, which is acidic
33) The H3O+ ion concentration of a solution is 1 × 10–4 mole per liter. This solution is
A) acidic and has a pH of 4
B) acidic and has a pH of 10
C) basic and has a pH of 4
D) basic and has a pH of 10
34) The pH of 0.001M HCl is
A) 1
B) 2
C) 3
D) 4
35)
Phenolphthalein is pink in an aqueous solution having a pH of
A)
5
B)
2
C)
7
D)
12
36)
What is the color of the indicator thymol blue in a solution that has a pH of 11?
A)
red
B)
blue
C)
pink
D)
yellow
37) Three samples of the same solution are tested, each with a different indicator. All three indicators, bromthymol blue, bromcresol green and thymol blue, appear blue if the pH of the solution is
A) 4.7
B) 6.0
C) 7.8
D) 9.9
38) Based on the results of testing colorless solutions with indicators, which solution is most acidic?
A) a solution in which bromthymol blue is blue
B) a solution in which bromcresol green is blue
C) a solution in which phenolphthalein is pink
D) a solution in which methyl orange is red
39)
Which indicator would best distinguish between a solution with a pH of 3.5 and a solution with a pH of 5.5
A)
bromthymol blue
B)
bromcresol green
C)
litmus
D)
thymol blue
40) Which indicator is blue in a solution that has a pH of 5.6?
A) bromcresol green
B) bromthymol blue
C) methyl orange
D) thymol blue
41) Which indicator, when added to a solution, changes color from yellow to blue as the pH of the solution is changed from 5.5 to 8.0?
A) bromcresol green
B) bromthymol blue
C) litmus
D) methyl orange
42)
The table below shows the color of the indicators methyl orange and litmus in two samples of the same solution.
Which pH value is consistent with the indicator results?
A)
1
B)
5
C)
3
D)
10
43) In which 0.01 M solution is phenolphthalein pink?
A) CH3OH(aq)
B) Ca(OH)2(aq)
C) CH3COOH(aq)
D) HNO3(aq)
44) Which indicator is yellow in a solution with a pH of 9.8?
A) methyl orange
B) bromthymol blue
C) bromcresol green
D) thymol blue
45) In which solution will thymol blue indicator appear blue?
A) 0.1 M CH3COOH
B) 0.1 M KOH
C) 0.1 M HCl
D) 0.1 M H2SO4
46) According to Reference Table M, what is the color of the indicator methyl orange in a solution that has a pH of 2?
A) blue
B) yellow
C) orange
D) red
47) Which solution when mixed with a drop of bromthymol blue will cause the indicator to change from blue to yellow?
A) 0.1 M HCl
B) 0.1 M NH3
C) 0.1 M CH3OH
D) 0.1 M NaOH
48)
According to one acid-base theory, NH3 acts as a base when an NH3 molecule
A)
accepts an ion
B)
donates an ion
C)
accepts an ion
D)
donates an ion
49)
Given the diagram representing a reaction:
According to one acid-base theory, the water acts as
A)
a base because it accepts an H+
B)
a base because it donates an H+
C)
an acid because it accepts an H+
D)
an acid because it donates an H+
50)
Given the balanced equation representing a reaction:
According to one acid-base theory, the H2O() molecules act as
A)
a base because they accept H+ ions
B)
a base because they donate H+ ions
C)
an acid because they accept H+ ions
D)
an acid because they donate H+ ions
Answers
<------------- ----------->
St. Weak Weak St
Acid. Base
7 = neutral
5 Acid. 8 10 12
Bases
Everything lt of 7 Acid
Everything rt of 7Base
The further left of 7 Stronger Acid
The further right of 7
Stronger Base
O
2
COX
2
will be produced from
97.0
g
97.0 g97, point, 0, start text, space, g, end text of
C
3
H
8
CX
3
HX
8
, assuming
O
2
OX
2
is available in excess?
Answers
Final answer:
Given 97.0 g of propane (C3H8), about 6.6 moles of CO2 will be produced according to the balanced chemical equation for the combustion of propane.
Explanation:
The question asks how many moles of CO2 will be produced from 97.0 g of C3H8, assuming O2 is available in excess.
The balanced chemical equation for the combustion of propane (C3H8) is C3H8 + 5O2 → 3CO2 + 4H2O. This tells us that one mole of propane produces three moles of CO2.
First, we need to find the moles of propane. The molar mass of propane is approximately 44.09 g/mole. So, 97.0 g of propane corresponds to approximately 2.2 moles. Therefore, 2.2 moles of propane produce 2.2 * 3 = 6.6 moles of CO2.
Learn more about moles of CO2 produced here:
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Answers
Answer:
True
Explanation:
Without enough nitrogen there is not enough nutrients for plants to make both aminoacids and many products of secondary metabolism
How many moles of water are produced when 2 moles of NH4 react with excess Oxygen gas?
Answers
The moles of water are produced when 2 moles of NH4 react with excess Oxygen gas is 4 mole of H2O.
What is moles?
Moles are defined as a common unit used in science to measure vast numbers of extremely small things, such atoms, molecules, or other specific particles.
It can also be defined as a metric in chemistry that is used to describe a very high quantity of molecules, atoms, or particles.
Since we only have two moles of NH4, we switch out four for two.
2 NH4 + 3O2 --> 2NO + 4 H2O
As per the reaction, in order to produce 2 moles of NO2 and 4 moles of H2O, 2 moles of NH4 must react with 3 moles of oxygen gas.
Thus, the moles of water are produced when 2 moles of NH4 react with excess Oxygen gas is 4 mole of H2O.
To learn more about moles, refer to the link below:
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Now, on balancing the equation, we get 2 NH4 + 3O2 ---> 2NO + 4 H2O (law of conservation of mass)
thus, 2 moles of NH4 react with 3 moles of oxygen gas to produce 2 moles of NO2 and 4 moles of H2O.
Thus, we get 4 moles of H2O
Answers
B) 2NaCl + F2 → 2NaF + Cl2
C) 2AlBr3 + 3K2SO4 → 6KBr + Al2(SO4)3
D) 2K + MgBr2 → 2KBr + Mg
Answers
Answer:
The correct answer is option C.
Explanation:
Double displacement reaction is defined as the reaction in which exchange of ions takes place to give a product.
Single displacement reaction is defined as the reaction in which more reactive element displaces a less reactive element from its chemical reaction.
From all the given options the reaction which is classified as Double displacement reaction is :
Where as other reactions are the examples of Single displacement reaction.