A sodium carbonate solution has a pH of 10. Which statement below is true. O A.

Question

A sodium carbonate solution has a pH of 10. Which statement below is true. O A. it is acidic O B. it is basic O C. it is a buffer O D. it has a hydroxide ion concentration of 10 10 O E. more than one of the above A Bronsted-Lowry acid is a compound that O A. dissolves in water to form hydroxide anions O B. donates a proton O C. dissolves in water to form H+ cations O D. accepts a proton O E. dissolves in water to donate or accept a proton What is the [H30+] of a solution which has a [OH-1 of 7.1x103 M? O A. 1.4x10 12 O B. 1.4x10 12 O C. 7.1x10 12 O D. 7.1x10 O E. 7.1x10

Explanation / Answer

1) B it is a basic BECAUSE P^H >7

2) B. DONATES A PROTON

3)

WE KNOW THAT

[H3O+] [OH-] = 10-14

[H3O+] = 10-14/ [OH-]

[H3O+] = 10-14/ (7.1*10-3]

[H3O+] = 1.4 *10-12

ANSWER IS A 1.4*10^-12

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