CHEMISTRY HIGH SCHOOL

Given the equation:HCl(g) + H2O(l)--> X(aq) + Cl--(aq)
Which ion is represented by X?
(1) hydroxide (3) hypochlorite
(2) hydronium (4) perchlorate

Answers

Answer 1

Answer:

Answer: The correct answer is Option 2.

Explanation:

For the given options:

Option 1:Hydroxide ion

The chemical formula for this ion is $OH^-$

Option 2:Hydronium ion

The chemical formula for this ion is $H_3O^+$

Option 3:Hypochlorite ion

The chemical formula for this ion is $ClO^-$

Option 4: Perchlorate ion

The chemical formula for this ion is $ClO_4^-$

For the given chemical reaction:

$HCl(g)+H_2O(l)\rightarrow H_3O^+(aq.)+Cl-(aq.)$

The ion represented by X is hydronium ion.

Hence, the correct answer is Option 2.

Answer 2

Answer: X will be hydronium (H3O)

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Which of these scenarios involve a reaction that is at equilibrium? a. the reaction is producing reactants and products at an equal rate.
b. the reaction is producing more reactants than products.
c. the reaction is only producing products
d. the reaction is producing more products than reactants.

Answers

at equilibrium the reaction is producing reactants and product at an equal rate so option A is correct hope this helps

Answer:

a. the reaction is producing reactants and products at an equal rate. is the correct answer.

Explanation:

If a reaction is at equilibrium then the reaction rates for both the reverse and forward directions are equal.

catalyst that increases the reaction rate of a reaction, but it does not change the equilibrium state for that reaction.

Thus at the equilibrium stage, the concentration of the reactants and the product remain constant.

Which compound has the strongest hydrogen bonding between its molecules? 1. HBr 2. HF 3. HCl 4. HI

Answers

You can compare the strength of the hydrogen bonding by comparing the electronegativities of the other elements. All the four elements, Br, F, Cl and I belong to the same group in the periodic table: group 17 named halogens. Then the kind of bonding they form is similar: polar covalent. You must know the trend of the electronegativities in the periodic table. Electronegativity decrease when you down across a group. Then the electronegativity of F is the higher of the group (indeed, it is the highest of all the 118 elements) . The higher the electronegativity the stronger the attraction that the halogen attracts the electrons and the stronger the hydorgen bonding. Then, the conclusion is that HF has the strongest hydrogen bonding.

The correct answer is HF

The symbol Na represents a sodium atom that has lost an electron. True False

Answers

False.
Na does represent sodium, but NOT when it lost an electron. Na+ represents sdoium when it lost its electron.

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b. solid to gas
c. liquid to gas
d. solid to liquid

Answers

The answer should be (A) liquid to solid. This is because it releases the heat absorbed by it when it had changed into liquid.

Answer:

its D

Explanation:

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Answers

Gold is extremely malleable in its purest form, so a 24-carat (pure) gold ring would be very easy to get dented and squashed during the time that it is being worn.
It is also extremely expensive to process gold to its purest form, so pure gold jewelry would be ridiculously expensive, to the point of no demand.
Hope that helped =)

1. Gold is soft like lead.

2. Pure gold isn't durable, and wouldn't last, nor would you be able to keep it on your finger since it's so soft. If you're gonna wear a ring for a life-time, it has to have durability.

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