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3 years ago

_____ is a process of reacting an acid with a base until an equivalence point is reached.

Chemistry

2 answers:

Sergeu [11.5K]3 years ago

7 0

Titration .... hope this helps

Studentka2010 [4]3 years ago

4 0

Titration is a process of reacting an acid with a base until an equivalence point is reached. so its Titration

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When cadmium sulfide is treated with sulfuric acid, fumes of hydrogen sulfide are given off. express your answers as chemical fo

djverab [1.8K]

The chemical formulas for their respective substances are the following:

Cadmium Sulfide: CdS
Sulfuric Acid: H₂SO₄
Hydrogen Sulfide: H₂S

This is a double replacement reaction where the substances of the reactants interchange to yield two products. The complete balance reaction would be:

CdS (s) + H₂SO₄ (aq) ----> CdSO₄ (aq) + H₂S (g)

The other product is Cadmium Sulfate.

8 0

4 years ago

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What is the correct formula for

suter [353]

Correct formula for what?

3 0

3 years ago

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What volume of hydrogen gas is required to react with 113 liters of ethylene (C2H4) according to the following reaction? (All ga

AysviL [449]

Answer: The volume of hydrogen gas required for the given amount of ethylene gas is 113 L

Explanation:

At STP:

1 mole of a gas occupies 22.4 L of volume

We are given:

Volume of ethylene = 113 L

For the given chemical equation:

$H_2(g)+C_2H_4(g)\rightarrow C_2H_6(g)$

By Stoichiometry of the reaction:

$(1\times 22.4)L$ of ethylene reacts with $(1\times 22.4)L$ of hydrogen gas

So, 113 L of ethylene gas will react with = $\frac{(1\times 22.4)}{(1\times 22.4)}\times 113=113L$ of hydrogen gas

Hence, the volume of hydrogen gas required for the given amount of ethylene gas is 113 L

5 0

3 years ago

The radioactive isotope of lead, Pb-209, decays at a rate proportional to the amount present at time t and has a half-life of 3.

astraxan [27]

Answer:

It will take 6.6 hours for 75% of the lead to decay.

Explanation:

The radioactive decay follows first order rate law

The half life and rate constant are related as

$k=rate constant=\frac{0.693}{halflife}=\frac{0.693}{3.3}=0.21h^{-1}$

The rate law for first order reaction is

$time=\frac{1}{k}(ln[\frac{A_{0}}{A_{t}}]$

Where

A0 = initial concentration = 1 g

At= final concentration = 0.25 g (as 75% undergoes decay so 25% left]

$time=\frac{1}{0.21}(ln(\frac{1}{0.25})=6.6hours$

5 0

3 years ago

Which of the following statements is FALSE?

Jobisdone [24]

Answer:

Option C is false statement. The half life of a second order reaction is not dependent on concentration.

Explanation:

Half life of a reaction is defined as the amount of time which is required for a reactant concentration reduced by half comparison to its initial concentration.

Half life of a second order reaction is depend on the initial concentration of a reaction, in contrast to 1st order reaction.

7 0

3 years ago