[cs_content][cs_section parallax=”false” separator_top_type=”none” separator_top_height=”50px” separator_top_angle_point=”50″ separator_bottom_type=”none” separator_bottom_height=”50px” separator_bottom_angle_point=”50″ style=”margin: 0px;padding: 45px 0px;”][cs_row inner_container=”true” marginless_columns=”false” style=”margin: 0px auto;padding: 0px;”][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/1″ style=”padding: 0px;”][cs_text]Acid/Base Reactions > Using Brønsted–Lowry Theory >[/cs_text][cs_text]Problem Statement:
6mL 0.15M NaOH solution is added to 15mL 0.15M CH3COOH solution. Calculate pH of the resulting solution [pKa = 4.74]
Solution:
The reaction between CH3COOH and NaOH is as follows[/cs_text][x_image type=”none” src=”https://easychem.com.au/wp-content/uploads/2019/06/reaction-between-CH3COOH-and-NaOH.jpg” alt=”” link=”false” href=”#” title=”” target=”” info=”none” info_place=”top” info_trigger=”hover” info_content=””][/cs_column][/cs_row][/cs_section][cs_section parallax=”false” separator_top_type=”none” separator_top_height=”50px” separator_top_angle_point=”50″ separator_bottom_type=”none” separator_bottom_height=”50px” separator_bottom_angle_point=”50″ style=”margin: 0px;padding: 45px 0px;”][cs_row inner_container=”true” marginless_columns=”false” style=”margin: 0px auto;padding: 0px;”][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/1″ style=”padding: 0px;”][cs_text]From the above reaction, we can see that 1 mole of NaOH can neutralize the same amount of CH3COOH to produce 1 mole of CH3COONa.
Therefore, 6mL 0.15M NaOH can neutralize 6mL 0.15M CH3COOH to produce 6mL 0.15M CH3COONa
Now, remaining acid = (15 – 6)mL = 9mL
Produced salt = 6mL
Total volume of solution = (15 + 6)mL = 21mL[/cs_text][x_image type=”none” src=”https://easychem.com.au/wp-content/uploads/2019/06/pH-of-the-resultant-solution.jpg” alt=”” link=”false” href=”#” title=”” target=”” info=”none” info_place=”top” info_trigger=”hover” info_content=””][/cs_column][/cs_row][cs_row inner_container=”true” marginless_columns=”false” style=”margin: 0px auto;padding: 0px;”][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/1″ style=”padding: 0px;”] [/cs_column][/cs_row][cs_row inner_container=”true” marginless_columns=”false” style=”margin: 0px auto;padding: 0px;”][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/1″ style=”padding: 0px;”] [/cs_column][/cs_row][/cs_section][/cs_content]