What is the conjugate base of the HSO4 – (aq) ion?
SO4 2-
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15
Vinegar has a pH of approximately 3 and some detergents have a pH of approximately 8. State and explain which of these has the higher concentration of H+ and by what factor.
Vinegar; factor of 100000
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15
A solution with a pOH of 4.3 has a [H+ ] of __________
2.0 x 10 ^(-10)
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15
When [H+ ] = 4.0 × 10–9 M in water at 25°C, then pH = __________
8.40
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10
In the following reaction in aqueous solution CH3COOH + NH3 = CH3COO- + NH4+, the acid reactant is __________ and its conjugate base product is __________.
CH3COOH; CH3COO-
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15
The pH of a popular soft drink is 3.4; what is its hydronium ion concentration?
4.0 x 10 ^(-4)
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20
Boric acid frequently is used as an eyewash to treat eye infections. The pH of a 0.050 M solution of boric acid is 5.28. What is the value of the boric acid ionization constant, Ka?
5.51 × 10 ^(-10)
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10
In the following reaction in aqueous solution CH3NH2 + HSO4- = CH3NH3+ + SO4 2–, the acid reactant is __________, and its conjugate base product is __________.
HSO4– ; SO4 2–
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10
Ammonia (NH3) acts as a weak base in aqueous solution. What is the acid that reacts with this base when ammonia is dissolved in water?
H2O
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15
The pKa values of four acids are as follows. (W 4.87; X 4.82; Y 4.86; Z 4.85). What is the correct order when these acids are arranged in order of increasing acid strength?
W < Y < Z < X
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15
If the pH of a solution increases by 2 units (e.g., from 1 to 3), then the ratio of the new to the original hydronium ion concentration is __________
1/100
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15
A solution with an [OH– ] concentration of 1.20 × 10–7 M has a pOH and pH of __________