6 When 26.0 mL of HNO 3 is titrated with 22.0 mL of 0.150 N NaOH, what is the no

Question

6 When 26.0 mL of HNO3 is titrated with 22.0 mL of 0.150 N NaOH, what is the normalityof the HNO3?     

                                                                                                                        _______________N HNO3

7.   45.0 mL of alcohol is mixed with water to make 250. mL of solution. What is the %(v/v) alcohol?

                                                                                                                        _______________%(v/v)alcohol

8. A patient is given 500. mL of a 3.50%(w/v)MgCl2 solution. How many g of MgCl2 were given?

                                                                                                ____________g MgCl2

.   When 26.0 mL of HNO3 is titrated with 22.0 mL of 0.150 N NaOH, what is the normality

9. What is the concentration after 55.0 mL of 12.0 M HCl is diluted to 500.0 mL?

                                                                                                                        ______________M HCl

10. What is the Ka of a weak acid where 0.725 M ionizes 4.2% in water?

                                                                                                _______________Ka

Explanation / Answer

6 )

N1 V1 = N2 V2

26 x N1 = 0.150 x 22

N1 = 0.127 N

0.127 N HNO3

7) 45.0 mL of alcohol is mixed with water to make 250. mL of solution. What is the %(v/v) alcohol?

%(v/v)alcohol = (45 x 100 / 250)

= 18 %

8.)

3.50 g -----------------------> 100 mL

x g ------------------------> 500 mL

x = 3.50 x 500 / 100

x = 17.5 g

MgCl2 mass = 17.5 g

9. )

55 x 12.0 = 500 x M

M = 1.32 M

HCl molarity = 1.32 M

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