QUESTION 1 Identify the acid and base on the reactant side and the conjugate aci

Question

QUESTION 1

Identify the acid and base on the reactant side and the conjugate acid and conjugate base on the product side of the following reaction.

HCO3- + H2PO4- H2CO3 + HPO42-

QUESTION 2

Match the following descriptions to the best choice.

A substance that takes in a H+ ion during a reaction

In the reaction of Ag+ and :NH3, Ag+ is best described as _________________

When HCl dissolves in water, the concentration of H3O+increases. HCl is best described by the definition of a(n) ___________________.

A substance that donates a pair of electrons is best described as a ________________

Lewis Acid

Lewis Base

Bronsted-Lowry Base

Arrhenius Acid

QUESTION 3

Write the conjugate acid for the following bases. If your answer has a charge with it, seperate it from the formula by a space. For example, SO42-would be entered as SO4 2-.

ClO-

NH3

HPO42-

S2-

  

QUESTION 4

Calculate the hydronium ion and hydroxide ion concentrations for 0.0038 M Mg(OH)2. Enter your answer in scientific notation with two significant figures. For example 6.4782 x 10-7 would be entered as 6.5e-7 (no spaces).

H3O+ concentration =

OH- concentration =

QUESTION 5

Identify the following solutions as acidic, basic or neutral.

4 x 10-5 M H3O+  

1 x 10-7 M OH-  

8 x 10-9 M OH-

3 x 10-9 M H3O+

  

QUESTION 6

Calculate the pH of 0.003M HBr.

Enter your answer to two places after the decimal. For example, 3.15.

QUESTION 7

Calculate the pH of 0.00075M Mg(OH)2.

  

QUESTION 8

Calculate the hydronium ion concentration for a solution with a pH of 2.72.

Enter your answer as a decimal value to 5 decimal places. For example 0.00014

A substance that takes in a H+ ion during a reaction

In the reaction of Ag+ and :NH3, Ag+ is best described as _________________

  

When HCl dissolves in water, the concentration of H3O+increases. HCl is best described by the definition of a(n) ___________________.

A substance that donates a pair of electrons is best described as a ________________

A.

Lewis Acid

B.

Lewis Base

C.

Bronsted-Lowry Base

D.

Arrhenius Acid

Explanation / Answer

1)

on reactant side

HCO3- is accepting H+. so, it is acid

H2PO4- is donating H+. So, it is base

After HCO3- accepts H+, it forms H2CO3

So, H2CO3 is conjugate base

After H2PO4- donates H+, it forms HPO42-

So, HPO42- is conjugate acid

2)

i)

A substance that takes in a H+ ion during a reaction

Bronsted-Lowry Base

ii)

In the reaction of Ag+ and :NH3, Ag+ is best described as

Lewis Acid since Ag+ is accepting electron pair from NH3

iii)

When HCl dissolves in water, the concentration of H3O+increases. HCl is best described by the definition of Arrhenius Acid

iv)

A substance that donates a pair of electrons is best described as a

Lewis Base

I am allowed to answer only 1 question at a time

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