According to Reference Table J, which of these metals will react mostreadily with 1.0 M HCl to produce H2(g)?(1) Ca (3) Mg(2) K (4) Zn
Answers
(K) potassium is the metal that will react most readily with 1.0 M HCl to produce H2(g).
What is potassium?
Potassium is a silvery-white metal with the symbol K and atomic number 19.
The reaction will be
The potassium will react with HCl to produce potassium chloride and hydrogen gas.
It is a single displacement reaction.
In this type of reaction, more reactive metal is displaced with less reactive metal.
Thus, the correct option is 2) K.
Learn more about potassium, here:
Answer: The correct answer is Option 2.
Explanation:
The reaction between a metal and HCl is a type of single displacement reaction.
Single replacement reactions are defined as the reactions in which more reactive metal replaces less reactive metal from its chemical equation. The reactivity is determined from the series called reactivity series. The metal lying above in the series is more reactive than the metal lying below in the series.
General equation for these types of reactions is:
From the series attached below, the most reactive metal is Potassium (K).
Increasing order of the reactivity of metals are:
Hence, the correct answer is Option 2.
Related Questions
What occurs when an atom loses an electron?(1) The atom’s radius decreases and the atom becomes a negative ion.(2) The atom’s radius decreases and the atom becomes a positive ion.(3) The atom’s radius increases and the atom becomes a negative ion.(4) The atom’s radius increases and the atom becomes a positive ion.
In a chemical equation, what name does the left side have
Which compound is an unsaturated hydrocarbon
The reaction between NaOH(aq) and H2SO4(aq) was studied in a constant-pressure calorimeter: 100.0 mL portions of 1.00 M aqueous NaOH and H2SO4, each at 24.0C, were mixed. The volume of the mixture was 200.0 mL. The maximum temperature achieved was 30.6C. Neglect the heat capacity of the calorimeter and the thermometer, and assume that the solution of products has a density of 1.00 g/mL and a specific heat capacity of 4.18 J/(g·K). Calculate H, the heat (enthalpy) of reaction, in kJ per mole of acid. (Hint: You may not have the equivalent amounts of NaOH and H2SO4 in this experiment.)
Answers
Answers
2NaClO3 9= 2NaCl + 3O2
We are given the amount of sodium chlorate to heat. This will be the starting point of our calculations.
200 g NaClO3 (1 mol / 106.44 g) ( 3 mol O2 / 2 mol NaClO3) (32 g O2 / 1 mol O2) = 90.19 g O2
Answers
Answers
Answer:
B: Discovering the internal structure of the atom.
Explanation:
Dalton’s experiments with gases marked the beginning of the modern era of chemistry. The hypotheses about the nature of matter on which Dalton’s atomic theory is based can be
summarized as follows:
- Elements are composed of extremely small particles called atoms.
- All atoms of a given element are identical, having the same size, mass, and chemical properties. The atoms of one element are different from the atoms of all other elements.
- Compounds are composed of atoms of more than one element. In any compound, the ratio of the numbers of atoms of any two of the elements present is either an integer or a simple fraction.
- A chemical reaction involves only the separation, combination, or rearrangement of atoms; it does not result in their creation or destruction.
Dalton made no attempt to describe the structure or composition of atom —he had no idea what an atom is really like. But he did realize that the different properties shown by elements such as hydrogen and oxygen can be explained by assuming that hydrogen atoms are not the same as oxygen atoms.
(1) Br2(ℓ) (3) KBr(s)
(2) K(s) (4) KBr(aq)
Answers
Answers
True, Plants don't have brains, but they still adapt to their environments.
What is adaptation?
Adaptation is a process where they are changing their nature to suit the environment.
We have seen that plants do adaptation according to the environment, as in the summer season their leaves are hanging down but in the rainy season they show blossoms and green leaves. So, according to the environment for the survival and reproduction they adapt their body.
Hence, plants have no brains, but they still adapt.
To learn more about adaptation, visit the below link:
Answer:
True
Explanation:
I just took that last year, and got a100%