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Vesna [10]
3 years ago
11

1. Name the following chemicals:

Chemistry
1 answer:
Nataly_w [17]3 years ago
4 0

Answer:

1.

a. Calcium Chloride

b. Sodium Iodide

c. Magnesium Iodide

d. Magnesium Oxide

e. Beryllium Oxide

f. Lithium Sulfide

2.

a. KF

b. H20

c. CaCO3

d. AgNO2

e. C02

f. Ba0

3.

a. Pb0

b. CuCl2

c. Fe2O3

d. NiF2

e. MnS2

f. FeF2

g. CrBr4

hope it helps

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(a) Kw = 1.139 × 10⁻¹⁵ at 0°C and 5.474 × 10⁻¹⁴, find [H₃O⁺] and pH of water at 0°C and 50°C.
kondor19780726 [428]

The  value of [H₃O⁺] and  pH of water at 0°C and 50°C.

0°C value of [H₃O⁺] = 3.375 x 10⁻⁸

50°C value of [H₃O⁺]  = 2.340 x 10⁻⁷

pH of water at 0°C  =  pH = 7.4717

pH of water at 50°C  =  pH  = 6.6308

<h3>pH of water at different level:</h3>

Water with a pH less than 7 is considered acidic, while water with a pH greater than 7 is considered basic. The normal pH range for surface water systems is 6.5 to 8.5, and for groundwater systems is 6 to 8.5. Alkalinity is a measure of a water's ability to withstand a pH change that would cause it to become more acidic.

<h3>According to the given information:</h3>

0°C  =  Kw = 1.139 × 10⁻¹⁵

50°C = 5.474 × 10⁻¹⁴

Solving at  0°C  for  [H₃O⁺] and pH. water is neutral therefore its[H₃O⁺] [OH⁻]

are equal [H₃O⁺] = [OH⁻].

                                                Kw  =  [H₃O⁺] [OH⁻]

                                                  Kw  =  [H₃O⁺]²

                                                  [H₃O⁺] =  √Kw

                                                            =  √1.139 × 10⁻¹⁵

                                                            = 3.375 x 10⁻⁸

                                                pH = -log[H₃O⁺]

                                                      = -log 3.375 x 10⁻⁸

                                                      = 7.4717

Solving at  50°C  for  [H₃O⁺] and pH. water is neutral therefore its[H₃O⁺] [OH⁻]

are equal [H₃O⁺] = [OH⁻].

                                                 Kw  =  [H₃O⁺] [OH⁻]

                                                  Kw  =  [H₃O⁺]²

                                                  [H₃O⁺] =  √Kw

                                                             = √ 5.474 × 10⁻¹⁴

                                                            = 2.340 x 10⁻⁷ M

                                                 pH = -log[H₃O⁺]

                                                       =  -log2.340 x 10⁻⁷

                                                   pH  = 6.6308

The  value of [H₃O⁺] and  pH of water at 0°C and 50°C.

0°C value of [H₃O⁺] = 3.375 x 10⁻⁸

50°C value of [H₃O⁺]  = 2.340 x 10⁻⁷

pH of water at 0°C  =  pH = 7.4717

pH of water at 50°C  =  pH  = 6.6308

To know more about pH of water visit:

brainly.com/question/13822050

#SPJ4

I understand that the question you are looking for is:

Kw = 1.139 × 10⁻¹⁵ at 0°C and 5.474 × 10⁻¹⁴, find [H₃O⁺] and pH of water at 0°C and 50°C. find the  [H₃O⁺] and  pH of water at 0°C and 50°C.

 

3 0
1 year ago
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