Free Printable CHEM 101 SI (11/9)

1.

Determine the concentration of an H₃PO₄ solution if it takes 36.5 mL of 0.100 M Ca(OH)₂ to neutralize 12.5 mL of the acid.

Hint: This is a titration problem

N_AV_A = N_BV_B

Hint: Concentration means Molarity (M)

(a)

2.

Which of the following is a proton ACCEPTOR?

a)

Acid

b)

Base

3.

Which of the following is a proton DONOR?

a)

Acid

b)

Base

4.

Given the equation below...

$Br^{-\ }+\ NH_4\ \leftrightarrow\ HBr\ +NH_3^{\ \ -}$

What is the acid?

a)

$Br^-$

b)

$NH_4$

c)

$HBr$

d)

$NH_3^{\ \ -}$

5.

Given the equation below...

$Br^{-\ }+\ NH_4\ \leftrightarrow\ HBr\ +NH_3^{\ \ -}$

What is the base?

a)

$Br^{-\ }$

b)

$NH_4$

c)

$HBr$

d)

$NH_3^{\ \ -}$

6.

Given the equation below...

$Br^{-\ }+\ NH_4\ \leftrightarrow\ HBr\ +NH_3^{\ \ -}$

What is the conjugate acid?

a)

$Br^{-\ }$

b)

$NH_4$

c)

$HBr$

d)

$NH_3^{\ \ -}$

7.

Given the equation below...

$Br^{-\ }+\ NH_4\ \leftrightarrow\ HBr\ +NH_3^{\ \ -}$

What is the conjugate base?

a)

$Br^-$

b)

$NH_4$

c)

$HBr$

d)

$NH_3^{\ \ -}$

CHEM 101 SI (11/9)

Total questions: 7

Worksheet time: 11mins

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