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AP Chem Unit 08 Day 02 Practice

Authored by Patrick Boylan

Chemistry

11th Grade

NGSS covered

Used 162+ times

AP Chem Unit 08 Day 02 Practice
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3 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

At 25°C, the [H3O+] of a solution is found to be 1.0x10-4M. What is the [OH-] of the solution and would the solution be considered acidic, basic, or neutral?

[OH-]=1.0x10-4 M

Basic

[OH-]=1.0x10-10 M

Acidic

[OH-]=1.0x10-4 M

Acidic

[OH-]=1.0x10-10 M

Basic

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Consider the Ka values for the following acids:

 

Acid                                       Ka

chlorous acid, HClO           1.1x10-2

acetic acid, HC2H3O2          1.8x10-5

oxalic acid, HC2HO4          2.0x10-3

malonic acid, HC3H3O4      2.4x10-2

 

Which has the strongest conjugate base?

chlorous acid

HClO

acetic acid

HC2H3O2

oxalic acid

HC2HO4

malonic acid HC3H3O4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

HF(aq) + H2O(l) ⇄ H3O+(aq) + F(aq)

The equilibrium constant, Ka, for the reaction above is 7.2x10-4.  Which answer shows the bases and their relative strengths?

F > H2O

HF > H3O+

H2O > F

H3O+ > HF

Tags

NGSS.HS-PS1-2

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