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1 year ago

A solution with a hydrogen ion concentration of 3.25 × 10-2 m is __ and has a hydroxide concentration of _

Chemistry

1 answer:

Romashka-Z-Leto [24]1 year ago

6 0

To know the acidity of a solution, we calculate the pH value. The formula for pH is given as:

pH = - log [H+] where H+ must be in Molar

We are given that H+ = 3.25 × 10-2 M

Therefore the pH is:

pH = - log [3.25 × 10-2]

pH = 1.488

Since pH is way below 7, therefore the solution is acidic.

To find for the OH- concentration, we must remember that the product of H+ and OH- is equivalent to 10^-14. Therefore,

[H+]*[OH-] = 10^-14 
[OH-] = 10^-14 / [H+]

[OH-] = 10^-14 / 3.25 × 10-2

[OH-] = 3.08 × 10-13 M

Answers:

Acidic

[OH-] = 3.08 × 10-13 M

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Here we have to calculate the heat required to raise the temperature of water from 85.0 ⁰F to 50.4 ⁰F.

10.857 kJ heat will be needed to raise the temperature from 50.4 ⁰F to 85.0 ⁰F

The amount of heat required to raise the temperature can be obtained from the equation H = m×s×(t₂-t₁).

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1 year ago

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Answer:

1) 41.16 % = 0.182 grams

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Explanation:

Step 1: Data given

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Step 2: The balanced equation

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Step 3: Calculate amount of SO4^2- in BaSO4

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The formula will be X2SO4 (with X = the unknown alkali metal).

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Moles sulphate = 0.182 grams (32.1 + 4*16)

Moles sulphate = 0.00189 moles

The moles of sulphate = 0.182/(32.1+16*4)

The moles of sulphate = 0.00189 moles

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For 0.00189 moles anion, we have 2*0.00189 = 0.00378 moles cation

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A solution with a hydrogen ion concentration of 3.25 × 10-2 m is ________ and has a hydroxide concentration of _______

A solution with a hydrogen ion concentration of 3.25 × 10-2 m is __ and has a hydroxide concentration of _