Zadanie 35
How does the acidity of a solution change when its pH decreases from 5 to 2? A. Increases 3 times B. Increases 1000 times C. Decreases 3 times D. Decreases 1000 times
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How does the acidity of a solution change when its pH decreases from 5 to 2? A. Increases 3 times B. Increases 1000 times C. Decreases 3 times D. Decreases 1000 times
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Which statement about this reaction of permanganate ions with iron(II) ions is correct? MnO4−(aq) + 5 Fe2+(aq) + 8 H+(aq) → Mn2+(aq) + 5 Fe3+(aq) + 4 H2O(l) A. MnO4− is the reducing agent B. Fe3+ is reduced C. The oxidation state of…
Which equation shows the first species acting as an electrophile? A. Br− + CH3CH2+ → CH3CH2Br B. H2O + H+ → H3O+ C. CN− + CH3Br → CH3CN + Br− D. AlCl3 + Cl− → AlCl4−
How many sigma bonds and pi bonds are in a molecule of the fatty acid shown, C12H20O2? In each option the number of sigma bonds is given first and the number of pi bonds second. A. 13 sigma, 3 pi B. 33 sigma, 6 pi C. 33 sigma, 3 pi D. 36 sigma, 3 pi
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Solutions of hydrobromic acid, HBr, and propanoic acid, CH3CH2COOH, have the same concentration. Which statement is correct? A. Both solutions have the same pH because both acids are monoprotic B. The propanoic acid solution has the lower pH C. The…