Can someone please check-over my answers to these Chemistry problems?
(My answers are in bold.)
Which of these acids is diprotic?
E. All of the Above
Which of these acids is triprotic?
E. None of the Above
Which of these reactions involves an acid and a covalent base?
A. HF + KOH → H2O + KF
B. H2SO4 + 2NaOH → Na2SO4 + 2H2O
C. HNO3 + Al(OH)3 → Al(NO3)3 + H2O
D. H2SO4 + 2H2O → 2H3O+ + SO42–
E. chemical equilibrium
600.0 mL of H2SO4 is titrated with a 6.0 M solution of NaOH and requires only 6.8 mL of NaOH to reach the endpoint. According to the unbalanced equation H2SO4 + NaOH → H2O + Na2SO4, what is the concentration of the H2SO4?
A. 0.041 moles
B. 0.021 moles
C. 0.034 M
D. 21 M
E. 34 M
When 45.0 mL of 4.8 M HCl reacts with an excess of Mg(OH)2, how many grams of Magnesium Chloride (MgCl2) are produced, given the unbalanced equation HCl + Mg(OH)2 → H2O + MgCl2?
A. 0.11 moles
B. 0.11 g
C. 1.1 moles
D. 1.1 g
E. 10. g