Question

1. On the pH scale, anything above 7 is ______. a. acidic b. basic c. neutral 2. A substance with a hydronium ion concentration of 3.44 x 10-8 M will have a pH of _. a. -7.46 b. 7.46 c. 6.54 d. -6.54 3. A substance with a hydroxide ion concentration of 1.55 x 10-9 M will have a pH of a. -8.8 b. 8.8 c. 5.2 d. -5.2 4. What would be the hydronium ion concentration of a solution with a pH of 8.1? a. 7.9 x 105 M b. 1.3 x 10-6 M c. 1.3 x 108 M d. 7.9 x 10-9 M 5. What would be the hydroxide ion concentration of a solution with a pH of 2.3? a. 5.0 x 1011 M b. 2.0 x 10-12 M c. 2.0 x 102 M d. 5.0 x 10-3 M 6. A solution tastes sour and is corrosive. This solution is . a. an acid b. a base c. a neutral 7. A solution feels slippery and is caustic. This solution is . a. an acid b. a base c. a neutral 8. In an aqueous solution acids ____. a. are proton donors b. are proton acceptors c. produce hydronium ions d. produce hydroxide ions e. both a and c f. both b and d

          1. On the pH scale, anything above 7 is
________.
a. acidic
b. basic 
c.  neutral 
2. A substance with a hydronium ion concentration
of 3.44 x 10-8 M will have a pH of
_____.
a. -7.46
b. 7.46
c. 6.54
d. -6.54
3. A substance with a hydroxide ion concentration
of 1.55 x 10-9 M will have a pH of
______
a. -8.8
b. 8.8 
c. 5.2
d. -5.2
4. What would be the hydronium ion concentration of
a solution with a pH of 8.1?
a. 7.9 x 105 M
b. 1.3 x 10-6 M
c. 1.3 x 108 M
d. 7.9 x 10-9  M
5. What would be the hydroxide ion concentration of
a solution with a pH of 2.3?
a. 5.0 x 1011 M
b. 2.0 x 10-12 M
c. 2.0 x 102 M
d. 5.0 x 10-3 M
6. A solution tastes sour and is corrosive. This
solution is ______.
a. an acid
b. a base
c. a neutral
7. A solution feels slippery and is caustic. This
solution is ______.
a. an acid
b. a base 
c. a neutral 
8. In an aqueous solution acids
________.
a. are proton donors
b. are proton acceptors
c. produce hydronium ions
d. produce hydroxide ions
e. both a and c
f. both b and d

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Added by Dwayne R.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Adi S

10/27/2022

Step 1

Step 2: A substance with a hydronium ion concentration of 3.44 x 10^-8 M will have a pH of **7.46**. Step 3: A substance with a hydroxide ion concentration of 1.55 x 10^-9 M will have a pH of **8.81**. Step 4: The hydronium ion concentration of a solution with Show more…

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1. On the pH scale, anything above 7 is ________. a. acidic b. basic c. neutral 2. A substance with a hydronium ion concentration of 3.44 x 10-8 M will have a pH of _____. a. -7.46 b. 7.46 c. 6.54 d. -6.54 3. A substance with a hydroxide ion concentration of 1.55 x 10-9 M will have a pH of ______ a. -8.8 b. 8.8 c. 5.2 d. -5.2 4. What would be the hydronium ion concentration of a solution with a pH of 8.1? a. 7.9 x 105 M b. 1.3 x 10-6 M c. 1.3 x 108 M d. 7.9 x 10-9 M 5. What would be the hydroxide ion concentration of a solution with a pH of 2.3? a. 5.0 x 1011 M b. 2.0 x 10-12 M c. 2.0 x 102 M d. 5.0 x 10-3 M 6. A solution tastes sour and is corrosive. This solution is ______. a. an acid b. a base c. a neutral 7. A solution feels slippery and is caustic. This solution is ______. a. an acid b. a base c. a neutral 8. In an aqueous solution acids ________. a. are proton donors b. are proton acceptors c. produce hydronium ions d. produce hydroxide ions e. both a and c f. both b and d

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Transcript

00:01 So in this question we have eight different parts so we'll solve them one by one the part one says on a ph scale anything above seven is what is acidic basic or neutral it is obviously basic now come to part two part two so a substance with hydromium ion i'm i'm i'm adronium ion then concentration of 3 .44 multiplied by 10 to the power minus 8 molar will have a ph value of what.

00:47 So the correct option or the way to find it is obviously the ph is given by the anti -log or minus log of 3 .44 multiplied by 10 to the power minus 8.

01:02 The given value which is with us so in this case if we have a look to the answer would be 7 .4 6 now coming on to the third part so the third part is says that a substance with hydroxide ion hydroxide ion with the concentration of 1 .55 multiplied by 10 to the per 9 you have a ph value of what so again ph would be given by the entire law of the value 1 .55 multiplied by 10 to the power minus 9.

01:45 This is going to be 7.

01:49 Rather 5 .27.

01:54 Now, coming on to the fourth part of the question.

01:59 So fourth part of the question is asking us about what should be the hydromium ion concentration? so concentration is asking, concentration solution.

02:11 Solution with the ph value of 8 .1 in hydromium.

02:20 Now this is going to be ph value minus antilog, rather antilog of h3 of plus.

02:32 So h3 of plus would be over here hydromium ion, 10 to the power minus ph value is equal to 10 to the power minus 8 .1 which is going to be equal to 7 .9 4 multiplied by 10 to the part minus 9 molar.

02:51 Now coming on to the fifth part of the question, coming on to the fifth part.

02:57 Fifth part is the ph value is given to us as 2 .3 of a solution.

03:03 What would be the hydroxide ion? hydroxide...

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