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3 years ago

An Arrhenius base yields which ion as the only negative ion in an aqueous solution?

1 answer:

7 0

Arrhenius bases are substances which produces hydroxide ions in solution. The <span>only negative ion in an aqueous solution is the hydroxide ion. The answer is number 4.</span>

You might be interested in

If a reaction has an equilibrium constant just greater than 1 what type of reaction is it?

SashulF [63]

Answer:

c. reversible favoring products, equilibrium constants are calculated in an equation of the type aA + bB = cC + dD, were Keq = ([C][D]) / ([A][B]).

Explanation:

If the equilibrium constant is just greater than 1, that means that the products are favored.

8 0

3 years ago

A simple of helium measuring 6L was kept at a pressure is of 1.5 atm ,if pressure is doubled what would be its new volume ?

KATRIN_1 [288]

Answer:

Explanation:

The following data were obtained from the question:

V1 (original volume) = 6L

P1 (original pressure) = 1.5 atm

P2 (new pressure) = 2 x P1 ( since the new pressure is doubled)

P2 = 2 x 1.5

P2 = 3 atm

V2 (new volume) =?

Using the Boyle's law equation P1V1 = P2V2, the new volume can be obtain as follow:

P1V1 = P2V2

1.5 x 6 = 3 x V2

Divide both side by 3

V2 = (1.5 x 6)/3

V2 = 3L

From our calculations, the new volume will be half the original volume and this will be 3L

6 0

3 years ago

How to design eletrical pylons

sammy [17]

electricity pylon or variations) is a tall structure, usually a steel lattice tower, used to support an overhead power line. ... In addition to steel, other materials may be used, including concrete and wood.

3 0

2 years ago

What pattern do you observe in the coefficients of the hydrocarbon (CxHy) and water (H2O)? How do you explain this pattern?

balu736 [363]

The coefficients of the hydrocarbon and water is 61 and it is explained below.

Explanation:

We have to balance the chemical equation that describes the combustion of octane C₈H₁₈. The combustion of octane involves burning this hydrocarbon in the presence of excess oxygen,O 2. Because octane is a hydrocarbon, that is the compound that contains only carbon and hydrogen, the reaction will produce two products carbon dioxide CO 2 and water H 2 O.

The unbalanced chemical equation is

C₈H₁₈ + O₂ → CO₂ + H₂O

To balance this equation, we have 8 present on the reactant side, so multiply the carbon dioxide by 8 to get 8 atoms of carbon on the products side.

C₈H₁₈ + O₂ → 8 CO₂ + H₂O

Now, we have 18 on the reactant side and 2 on the products side, so multiply the water molecule by 9 to get

C₈H₁₈ + O₂ → 8 CO₂ + 9 H₂O

8 * 2 atoms O + 9 *1 atoms O = 25 atoms O

By adding fractional coefficient to O₂ we get

C₈H₁₈ + $\frac{25}{2}$ O₂ → 8 CO₂ + 9 H₂O

Multiply all the coefficients by 2 we get,

2C₈H₁₈ + ( $\frac{25}{2}$ * 2) O₂ → 8 * 2 CO₂ + 9* 2 H₂O

The balance equation is

2C₈H₁₈ + 25 O₂ → 16 CO₂ + 18 H₂O

Add the coefficients to get their sum

= 2 +25 + 16 +18 = 61

Thus, The coefficients of the hydrocarbon and water is 61

6 0

3 years ago

The two most abundant atmospheric gases react to a tiny extent at 298 K in the presence of a catalyst:N₂(g) + O₂(g) ⇆ 2NO(g) Kp

kogti [31]

A reversible reaction is defined as a chemical reaction where the reactants and the products react together to give the reactants back.

<h3>Reversible reaction</h3>

The reaction is:

H2O+O⟶2OH , ΔH=−72kJ; Ea=77kJ/mol

2OH⟶H2O+O , Ea=? (Refer to Image)

Ea for the reverse reaction

=(Ea)forward+ΔH

=77+(−72)=5kJ

<h3>What is reverse reaction equation?</h3>

A reversible reaction is denoted by a double arrow pointing both directions in a chemical equation. For example, a two reagent, two product equation would be written as. A + B ⇆ C + D. In simple words, we can say that it is a reaction involving the simultaneous conversion of reactants to products and vice versa.

To learn more about reverse reaction visit the link

brainly.com/question/16614705

#SPJ4

8 0

1 year ago