Exploring Creation Chemistry Module #10 Test
Enter your Name:
Enter your E-mail Address:
01. A substance tastes sour and causes blue litmus paper to turn red. Is it an acid or a base?
02a. In the equation C
2
H
6
O + CO
3
2-
-> HCO
3
1-
+ C
2
H
5
O
1-
identify the acid and the base.
02b. In the equation HNO
3
+ H
2
O -> H
3
O
1+
+ NO
3
1- identify the acid and the base.
02c. In the equation HCl + KOH -> KCl + H
2
O identify the acid and the base.
03. What is the chemical definition of a base?
04. Which of the following acids is (are) diprotic?
a. HNO
3
b. H
2
CO
3
c. H
3
PO
4
d. HSO
4
1-
05. What is an amphiprotic substance? Give an example of one.
06. You have a brightly colored substance that you think might be an indicator. How would you make sure that it is one?
07. What is wrong with the following statement:
"In a titration, the endpoint occurs when the number of moles of acid added equals the number of moles of base in the original solution, or vice-versa"
08. Give a balanced chemical equation for the reaction between phosphoric acid (H
3
PO
4
) and CsOH.
09. What is the balanced chemical equation that represents the reaction of HCl with Be(OH)
2
?
10. Write the balanced chemical equation for the reaction of HF with water.
11. What is the concentration of an ammonia (NH
3
) solution if 12.23 grams of ammonia are dissolved in enough water to make 560.0 mL of solution?
12. If a chemist has a stock solution of HBr that is 10.0 M and would like to make 450.0 mL of 3.0 M HBr, how would he or she do it?
13. A chemist reacts 30.0 mL of 5.6 M HCl with an excess of Mg(OH)
2
. How many grams of magnesium chloride will be produced?
14. If a chemist titrates 120.0 mL of NaOH with a 5.0 M solution of HCl and requires 56.0 mL of the acid to reach the endpoint, what is the concentration of the NaOH?
15. If a chemist titrates 300.0 mL of H
2
SO
4
with a 3.0 M solution of NaOH and requires only 3.4 mL of the base to reach the endpoint, what is the concentration of the sulfuric acid?