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ACS practice questions with correct answers | 100% pass
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ACS practice questions with correct answers | 100% pass Examples of Lewis-Acid based reactions - ️️ Correct-H+(aq) + OH-(aq) →← H2O(l), HCl(g) + NH3(g) → NH4Cl(s) H+(aq) + OH-(aq) →← H2O(l) According to the Lewis definition, an acid is a species - ️️ Correct-accepting a pair ...

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  • September 25, 2024
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  • 2024/2025
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TITLE: EMILLYCHARLOTTE 2024/2025 ACADEMIC PERIOD
OWNER: EMILLYCHARLOTTE
COPYRIGHT STATEMENT: ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISHED: SEPTEMBER 2024

ACS practice questions with correct
answers | 100% pass
Examples of Lewis-Acid based reactions - ✔️✔️Correct-H+(aq) + OH-(aq) →← H2O(l),


HCl(g) + NH3(g) → NH4Cl(s)

H+(aq) + OH-(aq) →← H2O(l)

According to the Lewis definition, an acid is a species - ✔️✔️Correct-accepting a pair of

electrons.

All are potential Lewis bases except - ✔️✔️Correct-CH4

Which hydrated metal ion is most acidic under conditions of equal molar concentration

in water? - ✔️✔️Correct-Al3+

Which element in Group 5A forms the most basic oxide? - ✔️✔️Correct-Bi

6. In what respect does an atom of magnesium differ from a magnesium ion (Mg2+)? -

✔️✔️Correct-The ion has a more stable electronic arrangement than the atom.

A certain atom has the symbol 148

73Px. What does this symbol tell about an atom of the element? - ✔️✔️Correct-It has 75

neutrons in the nucleus

The atomic mass of an element is 32.07 u and its atomic number is 16. The number of

protons

contained in the nucleus of an atom of this element is - ✔️✔️Correct-16

1/19

,TITLE: EMILLYCHARLOTTE 2024/2025 ACADEMIC PERIOD
OWNER: EMILLYCHARLOTTE
COPYRIGHT STATEMENT: ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISHED: SEPTEMBER 2024
The atomic mass of an element is 32.07 u and its atomic number is 16. The element

forms a simple

ion. The ion will most likely have a charge of - ✔️✔️Correct-2-

. The nucleus of which atom contains seven neutrons? - ✔️✔️Correct-M=17, Z=10 n=1,

n=2

In which pair of compounds should the first member be more covalent than the second

member? - ✔️✔️Correct-SnI4, SnF4

Which is the most complete and best description of a covalent bond? - ✔️✔️Correct-a

system of two nuclei where each atom donates one electron to the other atom, thus

forming a bond

Which pair of elements is most likely to react to form a covalently bonded species? -

✔️✔️Correct-P and O

Which chloride should exhibit the most covalent type of bond? - ✔️✔️Correct-BeCl2

The compound of which two elements is most likely to involve covalent bonding? -

✔️✔️Correct-2.8 and 3.0

Chromium metal can be plated from an acidic solution of CrO3. - ✔️✔️Correct-1.73

What time is required to plate 2.08 g of copper at a constant current flow of 1.26 A?

Cu 63.5 g·mol-1

Cu2+(aq) + 2e- →← Cu(s) - ✔️✔️Correct-83.6 min




2/19

, TITLE: EMILLYCHARLOTTE 2024/2025 ACADEMIC PERIOD
OWNER: EMILLYCHARLOTTE
COPYRIGHT STATEMENT: ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISHED: SEPTEMBER 2024
Nickel is a transition element and has a variable valence. Using a nickel salt, 2 F

(faradays) plate out

39.2 g of nickel. What ions are in the solution of this salt?



Ag 107.9 g·mol-1

Cu 63.5 g·mol-1 - ✔️✔️Correct-Ni3+

. A given amount of electric charge deposits 2.159 g of silver from an Ag+ solution.

What mass of

copper from a Cu2+ solution will be deposited by the same quantity of electric charge?



Ag 107.9 g·mol-1

Cu 63.5 g·mol-1 - ✔️✔️Correct-0.635 g

If each of these ions were reduced to metal with one coulomb, which would yield the

greatest mass? - ✔️✔️Correct-Ag+(aq)

Which is a proper description of chemical equilibrium? - ✔️✔️Correct-Reactant molecules

are forming products as fast as product molecules are reacting to form reactants.

When equilibrium has been reached in the reaction

AE + CD →← CE + AD + x kJ

in which all substances are in solution, - ✔️✔️Correct-escape of some AD by volatilization

will increase the concentration of CE

Given the reaction 2X(g) + Y(g) →← 2Z(g) ∆H = -335 kJ which combination of

3/19

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