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Hello! Please Help Explain These Simple Chemistry Questions I Do

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10. Which is not a conjugate acid-base pair?
[1 mark]
A. HNO 3 and NO3
B. CH3 COOH and CH3 COO
C. H30 * and OH
D. HSO and SO 12
11. The pH of a solution changes from pH = 2 to pH = 5. What happens to [1 mark]
the concentration of the hydrogen ions during this pH change?
A. It decreases by a factor of 1000
B. It increases by a factor of 1000
C. It decreases by a factor of 100
D. It increases by a factor of 100
12. What is the conjugate base of H2CO3 according to the Bronsted-Lowry [1 mark]
theory?
A. CO3
B. HCO3
C. H3 CO3
D. CO2
13. Which species behave as Bronsted-Lowry acids in the following reversible [1 mark]
reaction?
H2POT (aq) + CN-(aq) – HCN(aq) + HPO? (aq)
A.
HCN and CN-
B. HCN and HPO?
C. H2PO and HPO?
D. HCN and H2PO
14. What is the formula of the conjugate base of the hydrogenphosphate ion, [1 mark]
HPO ?
A. H2POA
B. H3PO4
C. HPOA
D. POS
15. Which are definitions of an acid according to the Bronsted-Lowry and
[1 mark]
Lewis theories?
Bronsted-Lowry
theory
Lewis theory
A
proton donor
electron pair acceptor
B
proton acceptor
electron pair acceptor
C.
proton acceptor
electron pair donor
D
proton donor
electron pair donorScience