1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Stolb23 [73]
3 years ago
12

Identify each substance as an acid or a base.

Chemistry
2 answers:
Anika [276]3 years ago
7 0

Answer:

Explanation:

To determine whether a substance is an acid or a base, count the hydrogens on each substance before and after the reaction. If the number of hydrogens has decreased that substance is the acid (donates hydrogen ions). If the number of hydrogens has increased that substance is the base (accepts hydrogen ions).

svp [43]3 years ago
4 0

Explanation:

<u>The first one is a base</u>

<u>The second one is an acid</u>

A base has a pH above 7

An acid has a pH below 7

Hope I helped!!! Have a great day!

You might be interested in
In the chemical reaction in which sucrose is heated and decomposes to form carbon dioxide and water, which of the following is a
kupik [55]
In the chemical reaction in which sucrose is heated and decomposes to form carbon dioxide  and water a. sucrose is a reactant
7 0
3 years ago
Read 2 more answers
An atom has atomic number 5 and mass number 11. How many protons does the atom have? 5 6 10 11
spin [16.1K]

Answer:

6 neutrons. The mass number is the number of protons and neutrons in the nucleus of an atom. The atomic number shows how many protons. Subract the atomic number from the mass number to find the number of neutrons.

Explanation:

6 0
3 years ago
Read 2 more answers
N the reaction Mg + 2HCl -&gt; MgCl2 + H2 which element’s oxidation number does not change?
BartSMP [9]

Answer:- Oxidation number of Cl does not change as it is -1 on both sides.

Explanations:- oxidation number of Mg on reactant side is 0 as it is in its elemental form(not combined with another element).

Oxidation number  of hydrogen in its compounds is +1, so if H is +1 in HCl the oxidation number of Cl is -1 as the sum has to be zero.

On product side, Mg oxidation number is +2 as the oxidation number of alkaline earth metals in their compounds is +2.

Two Cl are present in magnesium chloride, so if Mg is +2 then Cl is -1.

Oxidation number of H on product side is 0 as it is present in its elemental for, H_2 ,

So, it is only chlorine(Cl) whose oxidation number does not change for the given equation.


4 0
3 years ago
Consider the reaction: 2HI(g) ⇄ H2(g) + I2(g). It is found that, when equilibrium is reached at a certain temperature, HI is 35.
Sliva [168]

Answer:

Kc = 0.075

Explanation:

The dissociation (α) is the initial quantity that ionized divided by the total dissolved. So, let's calling x the ionized quantity, and M the initial one:

α = x/M

x = M*α

x = 0.354M

For the stoichiometry of the reaction (2:1:1), the concentration of H₂ and I₂ must be half of the acid. So the equilibrium table must be:

2HI(g) ⇄   H₂(g) +    I₂(g)

M               0             0               <em> Initial</em>

-0.354M  +0.177M  +0.177M       <em>Reacts</em>

0.646M     0.177M   0.177M        <em>Equilibrium</em>

The equilibrium constant Kc is the multiplication of the products' concentrations (elevated by their coefficients) divided by the multiplication of the reactants' concentrations (elevated by their coefficients):

Kc = \frac{[H2]*[I2]}{[HI]^2}

Kc = \frac{0.177M*0.177M}{(0.646M)^2}

Kc = \frac{0.03133M^2}{0.41732M^2}

Kc = 0.075

5 0
3 years ago
What is the purpose of a
Vlada [557]

Answer:

B. Holding spores

Explanation:

B is the answer

3 0
2 years ago
Other questions:
  • The last column of the periodic table contains the noble gases, elements that do not easily form chemical bonds.
    9·1 answer
  • Grams of solute needed
    15·1 answer
  • How many moles of oxygen react with 7.3 mole of iron?<br>4Fe + 302 → 2Fe2O3​
    11·1 answer
  • Who might benefit from this claim?
    15·1 answer
  • This reaction is first order with respect to reactant a and second order with respect to reactant b. if the concnetration of a i
    13·1 answer
  • What is the symbol of gold ​
    11·2 answers
  • Molecular iodine,
    7·1 answer
  • PLZZZ HELP. Just say yellow goes under ..... for example.
    5·1 answer
  • How many moles of KCl are in <br> 28g of KCl?
    5·2 answers
  • 1.On the periodic table, what is a period? What characteristic is shared
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!