Question

please

TODOH @ 32. With in what range are you 95% confidant the true value lles for the above urie acid values in Q-312 33. How can you reject 4.85 as an outlier al a 95% confidence level from the following replicate observations: 4.85, 6.18, 6.28, 6.496.69. SECTION C (CL0: 2.3.1) 34. What is the pH of A3.00 X 10-7M solution of Nitric acid? A083 B.6.52 C. 8.67 D. 9.34

Answer 1

Section C

34.Given acid is HNO3(nitric acid).Nitric acid being a strong acid dissociate completely in water

HNO3 + H2O$\rightarrow$H3O++NO3-

So,3.00×10-7M HNO3 dissociates completely in water to give 3.00×10-7H3O+

H3O+ is H+

pH=-$\log$[H+]

pH=-$\log$(3.00×10-7)

=6.52

Answer :B) 6.52

35)HCl is a strong acid which dissociates completely in water

HCl+H2O$\rightarrow$H3O++Cl-

0.15M of HCl gives 0.15M H3O+

H3O+ is H+

pH=-$\log$[H+]

pH=-$\log$(0.15)

   =0.823

Answer: A) 0.83

36)pH+pOH=14

Given pH=4

pOH=14-pH

=14-4

   =10

Answer: C) 10