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3 years ago

How do you classify chemical reactions

Chemistry

1 answer:

lakkis [162]3 years ago

7 0

Explanation:

Chemical reactions occur when substances are transformed into other substances.

chemical reactions are generally categorized into four basic types:

Combination or Synthesis- This involves the formation of a single product from two or more reactants.
Decomposition or cracking: this is the formation of the of two or more products from a single reactant.
Single replacement or single displacement - in this reaction type one substance is replacing another.
Double replacement or double decomposition - involves an actual exchange of partners to form new compounds .

Learn more:

Chemical reaction brainly.com/question/3953793

#learnwithBrainly

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An atom has 13 protons, 13 neutrons, and 13 electrons. Another atom has 13 protons, 14 neutrons, and 13 electrons. Analyze and e

olga nikolaevna [1]

They are alike bc they both have 13 protons and neutrons

3 0

3 years ago

Find the pH. What are the pH values for the following solutions? (a) 0.1 M HCl (b) 0.1 M NaOH (c) 0.05 M HCl (d) 0.05 M NaOH

slega [8]

Answer:

(a) $pH=1$

(b) $pH=1.3$

(d) $pH=12.7$

Explanation:

Hello,

In this case, we define the pH in terms of the concentration of hydronium ions as:

$pH=-log([H^+])$

Which is directly computed for the strong hydrochloric acid (consider a complete dissociation which means the concentration of hydronium equals the concentration of acid) in (a) and (c) as shown below:

(a)

$[H^+]=[HCl]=0.1M$

$pH=-log(0.1)=1$

(b)

$[H^+]=[HCl]=0.05M$

$pH=-log(0.05)=1.3$

Nevertheless, for the strong sodium hydroxide, we don't directly compute the pH but the pOH since the concentration of base equals the concentration hydroxyl in the solution:

$[OH^-]=[NaOH]$

$pOH=-log([OH^-])$

$pH=14-pOH$

Thus, we have:

(b)

$pOH=-log(0.1)=1\\pH=14-1=13$

(d)

$pOH=-log(0.05)=1.3\\pH=14-1.3=12.7$

Best regards.

5 0

3 years ago

Equilibrium is reached in chemical reactions when: A) The rates of the forward and reverse reactions become equal. B) The concen

kap26 [50]

Answer:

Correct option: A

Explanation:

Equilibrium means the state of reaction which there is no net changes occur it means the rate of forward reaction and rate of backward reaction become same and also it does not mean that the concentration of both side i.e. reactant and product become equal. after gaining equlibrium position the concentration of reactant and product remain same and also chemical reaction does not stop and it continues.

3 0

3 years ago

Read 2 more answers

How many grams are in 4.3 x 10 -4 moles of calcium phosphate?

attashe74 [19]

Explanation:

Ca3(PO4)2 1 mole has 310.2 g

Ca3(PO4)2 4.3 × 10^-4 moles has 4.3 × 10^-4 × 310.2

= 1,333.86 × 10^-4

= 1.334 × 10^-1

OR 0.1334 g

5 0

3 years ago

Element X reacts to form XO. It has the second smallest radius of its group. What is element X?

andriy [413]

Answer:

Explanation:

Is the element of the first group and is the second smallest of its group. Even Magnesium is in the same situation, but if you compare the atomic radius of lithium and magnesium, the first one is smaller.

Barium definitely is incorrect because is the one that has the biggest radius of its group.

Beryllium is the first of its group so it can not fit the description.

8 0

3 years ago