the correct equation of electrolyte ionization reaction in water is
1. the correct equation of electrolyte ionization reaction in water is
the correct equation if electrolyte ionization reaction in water is H2 + O2 = H2O.
2. balance the following redox reaction using half reactionC2O42- + MnO4-->MN2+ + CO2
Jawaban:
Frank Lampard ingin tahu bagaimana cara agar cepat punya anak dari seorang teman yang baik dan benar
3. 28. Which does NOT change with time for a first-order reaction? (A) the amount of reactant that disappears in each half- life (B) the concentration of the reactant (C) the length of each half-life (D) the rate of the reaction
Pada reaksi order pertama yang tidak mengalami perubahan adalah :
C. The length of each half-life
Pembahasan
Reaksi orde pertama adalah reaksi dalam orde menetap, laju reaksi berbanding lurus dengan konsentrasi salah satu reaktan. Reaksi orde pertama sering memiliki bentuk umum A → produk. Tingkat diferensial untuk reaksi orde pertama adalah sebagai berikut:
laju=−Δ[A]/Δt=k[A]
Jika konsentrasi A digandakan, laju reaksi menjadi dua kali lipat, jika konsentrasi A dinaikkan dengan faktor 10, laju reaksi meningkat dengan faktor 10, dan seterusnya. Karena satuan laju reaksi selalu mol per liter per detik, satuan konstanta laju orde pertama adalah detik timbal balik (s−1). Hukum laju terintegrasi untuk reaksi orde pertama dapat ditulis dalam dua cara yang berbeda: satu menggunakan eksponen dan satu menggunakan logaritma. Ingat bahwa hukum laju terintegrasi memberikan hubungan antara konsentrasi reaktan dan waktu.
Pelajari lebih lanjut
Pelajari lebih lanjut mengenai materi laju reaksi orde pertama pada link berikut :
https://brainly.co.id/tugas/6386928
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#SPJ1
4. what was Emma's reaction ...... the news
when she read the newswhat was emma's reaction when she heard the news? (tp bila yg diminta conjuction: what was emma's reaction about the news?)
5. the oxidation number of mangan in the reaction 3MnO2 + KClO3 + 6KOH ➡ 3K2MnO4 + KCl + 3H2O isa. increasing 3b. decreasing 3c. decreasing 2d. increasing 2e. increasing 5
3MnO2 + KClO3 + 6KOH ➡ 3K2MnO4 + KCl + 3H2O
3MnO2 --> Mn + O2 = 0
Mn + (-2)2 = 0
Mn - 4 = 0
Mn oxd.number in 3MnO2 = 4
3K2MnO4 --> K2 + Mn + O4 = 0
1(2) + Mn + (-2)4 = 0
2 + Mn - 8 = 0
Mn = 8 - 2
Mn oxd. number in 3K2MnO4 = 6
so, the oxidation number of mangan in the reaction 3MnO2 + KClO3 + 6KOH ➡ 3K2MnO4 + KCl + 3H2O is increasing 2 (d)
6. A reaction gives out heat. This means that_____.a. the reaction only involves making new bondsb. the reaction only involves breaking existing bondsc. the bonds made are stronger than the bonds brokend. the bonds broken were stronger than the bonds made
d. the bonds broken were stronger than the bonds made
Itu menurut saya, maaf ya kalau salah, semoga membatu :))
7. Word equation for the reaction of astatine with iron
Jawaban:
Persamaan kata untuk reaksi astatin dengan besi
Penjelasan:
suruh apasih aku artiin aj
8. A 1.000 mol sample of propane, a gas used for cooking in many rural areas, was placed in a bomb calorimeter with excess oxygen and ignited. The initial temperature of the calorimeter was 25.000 °C and its total heat capacity was 97.13 kJ °C-1. The reaction raised the temperature of the calorimeter to 27.282 °C. (a) Write the balanced chemical equation for the reaction in the calorimeter. (b) How many joules were liberated in this reaction? (c) What is the heat of reaction of propane with oxygen expressed in kilojoules per mole of C3H8 burned?
Kimia Kelas XI
Termokimia
Mohon koreksinya ya! Semoga membantu :) Tetap semangatt ^^
9. Write the mechanism of the following reaction CH3CH2OH + HBr ---->
substitution reaction
CH3-CH2-OH + HBr --> CH3 - CH2 - Br + H2O
I hope its helps...
10. Which equation represents the standard enthalpy change of formation of water .....
Jawaban:
equation represents the standard enthalpy change of formation of water
is 2H2(g)+O2(g)→2H2O(l)
11. how is the reaction of photosynthesis?
Jawaban:
Photosynthesis occurs in two stages. In the first stage, light-dependent reactions or light reactions capture the energy of light and use it to make the energy-storage molecules ATP and NADPH. During the second stage, the light-independent reactions use these products to capture and reduce carbon dioxide.
12. Write a balanced chemical equation describing the reaction of zinc and hydrochloric acid !
Answer :Reaction Metal Metal =Zn(s) Hydrochloric acid solution =HCl(aq) Zinc Chloride =ZnCl2(aq) Hydrogen Gas =H2 (g) Zn(s)+HCl (aq) -->ZnCl2(aq)+H2 (g) EquateZn(s) +2HCl(aq)-->ZnCL2 (aq) +H2 (g)
13. Write the word equation for the reaction between zinc and copper sulfate.
Jawaban:
Zn + CuSO4 ⇒ ZnSO4 + Cu
Penjelasan:
Zn has oxidation number equal to +2. Cu has oxidation number equal to +2. SO4 has oxidation number equal to -2.
14. (a) Place the metals calcium, potassium and zinc in order of chemical reactivity towards water, from the most reactive to the least reactive. (b) Write the chemical equation for the reaction between the most reactive metal in (a) and water.
Hope this will help....hmm.... Chem sec 4 right ?
15. ammonia sulfate is the product from the reaction between ammonia and sulfuric acid.write down the chemical formula of substances involed in the reaction
[STOICHIOMETRY | X SHS]
Ammonium sulfate : (NH₄)₂SO₄
Ammonia : NH₃
Sulfuric acid : H₂SO₄
Reaction :
2NH₃ + H₂SO₄ --> (NH₄)₂SO₄ (balanced)
16. Magnesium Sulfate could be made in the laboratory by neutralising a base, Magnesium Oxide, with an acid. What is the acid and write a balanced equation for the reaction.
The acid is sulphuric acid (H2SO4)
The reaction is:
[tex] MgO + H_2SO_4 => MgSO_4 + H_2O [/tex]H₂SO₄ (sulfuric acid)
Balanced equation of the reaction
[tex]MgO_{(s)} + H_2SO_4_{(aq)} \rightarrow MgSO_4_{(aq)} + H_2O_{(l)} [/tex]
17. word equation for reaction between calcium and water
Jawaban:
Jawaban ada di gambar ya
Penjelasan:
Semoga membantu dan jadikan jawaban tercerdas ya :)
18. Look! The woman which wallet was stollen called the police! I think that's a proper reaction. Manakah kata yang salah?
Jawaban:
which, sharusnya whose.
Penjelasan:
PLIS JADIIN KOMEN TERBAIK
Look! The woman which wallet was stolen called the police!
Penjelasan:
Yang ditebelin salah, yang bener seharusnya
whose
Jangan yang aku dicerdasin initiaaa aja
19. HNO3 (aq) + H2O (l) → NO3- (aq) + H3O+ (aq) Which substance in the reaction is considered to be the base?
Jawaban:
H2O
Penjelasan:
basa adalah yg menerima proton,
dalam reaksi tersebut H2O nantinya yg akan menerima proton menjadi H3O+
#sejutapohon
20. 2. A reaction between 70.0 g of copper(II) oxide and 50 mL of 2.0 M nitric acid produces copper(II) nitrate, Cu(NO3)2 and water. (a) Write the balanced chemical equation for the above reaction. (b) Determine the limiting reactant. (c) Calculate the mass of excess reactant after the reaction. (66.02 g) (d) Determine the percentage yield if the actual mass of copper(II) nitrate obtained from the reaction is 8.5 g (90.62%)
Jawaban:
a. The balanced chemical equation for the reaction above
CuO + 2[tex]HNO_{3}[/tex] → [tex]Cu(NO_{3})_{2}[/tex] + [tex]H_{2}O[/tex]
b. he limiting reactant: nitric acid ([tex]HNO_{3}[/tex])
c. the mass of excess reactant after the reaction = 67,97 g
d. the percentage yield if the actual mass of copper(II) nitrate obtained from the reaction is 8.5 g = 50,47%
Penjelasan:
Persamaan reaksi dari reaksi tersebut adalah:
CuO + 2[tex]HNO_{3}[/tex] → [tex]Cu(NO_{3})_{2}[/tex] + [tex]H_{2}O[/tex]
mol CuO = [tex]\frac{massa}{Mr}[/tex]
= [tex]\frac{70}{79,5}[/tex]
= 0,88 mol
mol [tex]HNO_{3}[/tex] = V x M
= 50 mL x 2 M
= 100 mmol = 0,1 mol
Pereaksi pembatas dapat ditentukan dengan membagi mol reaktan dengan keofisienya. Reaktan yang hasil baginya lebih kecil merupakan pereaksi pembatas.
[tex]\frac{mol CuO}{koef CuO}[/tex] = [tex]\frac{0,88}{1}[/tex] = 0,88
[tex]\frac{mol HNO_{3} }{koef HNO_{3} }[/tex] = [tex]\frac{0,1}{2}[/tex] = 0,05
Hasil bagi yang lebih kecil adalah [tex]HNO_{3}[/tex] jadi pereaksi pembatasnya adalah [tex]HNO_{3}[/tex]. Sehingga:
mol CuO yang bereaksi = [tex]\frac{koef CuO}{Koef HNO_{3} }[/tex] x mol [tex]HNO_{3}[/tex]
= [tex]\frac{1}{2}[/tex] x 0,05
= 0,025 mol
mol [tex]Cu(NO_{3})_{2}[/tex] hasil reaksi = [tex]\frac{koef Cu(NO_{3})_{2} }{Koef HNO_{3} }[/tex] x mol [tex]HNO_{3}[/tex]
= [tex]\frac{1}{2}[/tex] x 0,05
= 0,025 mol
mol [tex]H_{2}O[/tex] hasil reaksi = [tex]\frac{koef H_{2}O }{Koef HNO_{3} }[/tex] x mol [tex]HNO_{3}[/tex]
= [tex]\frac{1}{2}[/tex] x 0,05
= 0,025 mol
CuO + 2[tex]HNO_{3}[/tex] → [tex]Cu(NO_{3})_{2}[/tex] + [tex]H_{2}O[/tex]
Awal : 0,88 mol 0,05 mol
Reaksi : 0,025 mol 0,05 mol 0,025 mol 0,025 mol
--------------------------------------------------------------------------------------------
Akhir : 0,855 mol - 0,025 mol 0,025 mol
Reaktan yang bersisa diakhir reaksi adalah CuO sebanyak 0,855 mol. Massa CuO = mol x Mr
= 0,855 x 79,5
= 67,97 g
[tex]Cu(NO_{3})_{2}[/tex] yang dihasilkan adalah 0,025 mol.
Massa [tex]Cu(NO_{3})_{2}[/tex] = mol x Mr
= 0,025 x 171,5
= 4,29 g
%[tex]Cu(NO_{3})_{2}[/tex] = [tex]\frac{4,29}{8,5}[/tex] x 100%
= 50,47%
Materi tentang pereaksi pembatas dapat disimak pada link:
https://brainly.co.id/tugas/40947892
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