Really hoping for solutions since I’m having a hard time with this. Pls. skip if unsure or not willing to answer. Thanks in advance. Which of the following is true ? a. H2S04 is a strong acid because it has 2 hydrogens b. Methyl amine (CH3NH2) is an example of an Arrhenius base. c. Strong Bronsted- Lowry acids has negative pKa. d. Weak bases are fully dissociated in water.
Ionic Equilibrium
Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.
Arrhenius Acid
Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red.
Bronsted Lowry Base In Inorganic Chemistry
Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.
Really hoping for solutions since I’m having a hard time with this. Pls. skip if unsure or not willing to answer. Thanks in advance.
Which of the following is true ?
a. H2S04 is a strong acid because it has 2 hydrogens
b. Methyl amine (CH3NH2) is an example of an Arrhenius base.
c. Strong Bronsted- Lowry acids has negative pKa.
d. Weak bases are fully dissociated in water.
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Given 2 H2S(g) + CH4(g) -> 4 H2(g) + CS2(g) Kc = 5.27 * 10-8 at 973 K
What is Kc for formation of one mole of H2S(g) S at 973 K?
a. 4.36 X103
b. 9.49 x106
c. 2.3 x10-4
d. 1.15 x 10-4
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CuS will be soluble in acidic pH because
a. Cu+2 is a Lewis acid and S-2 is the counter-ion of strong acid , H2S.
b. S-2 is the conjugate base of a weak acid, H2S and Cu+2 is counter-ion of a strong base Cu(OH)2.
c. S-2 is the conjugate base of a weak acid HS- and Cu+2 is counter-ion of a strong base Cu(OH)2.
d. Cu+2 is a conjugate acid of a weak base Cu(OH)2 and S-2 is the counter-ion of strong acid, H2S.
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You need to use a salt that would have a neutral pH when dissolved in water . Which of the following will you choose ?
HF. pka = 3.18
Acetic Acid pka= 4.74
NH3. pkb = 4.74
CN- pkb = 4.79
a. sodium cyanide
b. ammonium fluoride
c. sodium fluoride
d. ammonium acetate
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Which statement below is true given below information?
CaCO3(s) -> CaO(s) + CO2(g) K= 1.9 X 10-23 at 298K
K =1 at 1200K
a. Changing pressure of the reaction vessel will not impact equilibria.
b. Reaction is an exothermic reaction.
c. Adding CaO(s) will favor the reverse reaction.
d. The reverse reaction is favored at 298 K.
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