Identify each substance as an acid or a base and write a chemical
equation showing how it is an acid or a base according to the Arrhenius definition.
(a)Ca(OH)2(aq)
(b)HC2H3O2(aq)
(c)KOH(aq)
(d)HNO3(aq)
How did you come up with the solution.
For each [OH−Explain how(a)[OH−−5(b)[OH−−12(c)[OH−−2(d)[OH−−9
], determine the pH and state whether the solution is acidic or basic.
] = 1.8 × 10 M
] = 8.9 × 10 M
] = 3.1 × 10 M
] = 1.96 × 10 M
Suppose you have a sample of NaOH (0.0315 L, to be exact). If this amount of NaOH is used to exactly titrate 0.0250 L of HCl that has a concentration of 0.105 M, what is the molarity of the NaOH? HINT: Remember to first get your balanced equation.
A.0.075 M
B.0.0833 M
C.0.132 M
D.0.105 M
Draw a Lewis structure for each molecule and determine its molecular
geometry. What kind of intermolecular forces are present in each substance?
(a)BCl3 (remember that B is a frequent exception to the octet rule)
(b)HCOH (carbon is central; each H and O bonded directly to C)
(c)CS2
(d)NCl3
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