1、 1 5 1 A B C D 2 A B C D 3. ( ) A B C CO2 CO2 D CO 4. A. 6 NaCl NaCl 6 B. C.KNO3 D. 5. 100g 5% NaCl A. B. C. D. 6. A. B. C. D. 7. ( ) A B C D 8 20 10% 150g 1 50g 2 20g 9. 50g 15% , 2 A B C D E (1) , (2) B g 1g (3) D 10 mL 50 mL 100 mL 4 E E 5 B 15% C D E 6 10.20g 2.9g (1) 20g MgSO 4+2NaOH=Mg(OH)2 +N
2、a2SO4 (2) g 11. U 3 1 2 U a b A a b B a b 12. 2016 6% A B C D 13. 2016 A B C D 14. 2016 A NH4NO3 B NaCl C NaOH D CaO 15.(2016. 10 50 g 11.5 g NaCl 64.3 g 1 2 3 4 1.A 2.A 2.C 3.D 4.A 5.B 6.B 7.C 8. 1 5g 2 12.5% 9. 1 3 2 6.5 3 50mL 4 5 6 10. 30% 7 a 11. 1 2 B U a b 12.C 13.C 14.A 15. 1 0.5 g 10+50 g+11.5 g-64.3 g=2.2 g 2 x NaHCO3+HCl=NaCl+H2O+CO2 84 44 x 2.2 g = x =4.2 g =84% 3 64.3 g- 5 g-4.2 g =63.5 g
