Ana sayfa
/
Kimya
/
2 (a) A student investigates the reaction between sodium hydroxide solution and hydrochloric acid. He uses this method: Step 1 add 50cm^3 of dilute hydrochloric acid to a conical flask Step 2 add a 5cm^3 portion of sodium hydroxide solution to the conical flask Step 3 test the pH of the mixture using both universal indicator paper and a pH meter The student repeats step 2 and step 3 until a total of 50cm^3 of sodium hydroxide solution has been added. State the piece of apparatus that should be used to measure 50cm^3 of hydrochloric acid. (1) __ ii) Name the type of reaction that occurs between hydrochloric acid and sodium hydroxide. __ (2 marks) (1)

Soru

2 (a) A student investigates the reaction between sodium hydroxide solution and hydrochloric acid. He uses this method: Step 1 add 50cm^3 of dilute hydrochloric acid to a conical flask Step 2 add a 5cm^3 portion of sodium hydroxide solution to the conical flask Step 3 test the pH of the mixture using both universal indicator paper and a pH meter The student repeats step 2 and step 3 until a total of 50cm^3 of sodium hydroxide solution has been added. State the piece of apparatus that should be used to measure 50cm^3 of hydrochloric acid. (1) __ ii) Name the type of reaction that occurs between hydrochloric acid and sodium hydroxide. __ (2 marks) (1)

2 (a) A student investigates the reaction between sodium hydroxide solution and hydrochloric acid. He uses this method: Step 1 add 50cm^3 of dilute hydrochloric acid to a conical flask Step 2 add a 5cm^3 portion of sodium hydroxide solution to the conical flask Step 3 test the pH of the mixture using both universal indicator paper and a pH meter The student repeats step 2 and step 3 until a total of 50cm^3 of sodium hydroxide solution has been added. State the piece of apparatus that should be used to measure 50cm^3 of hydrochloric acid. (1) __ ii) Name the type of reaction that occurs between hydrochloric acid and sodium hydroxide. __ (2 marks) (1)

Çözüm

4.3249 Voting
avatar
Erdem
Usta · 5 yıl öğretmeni
Uzman doğrulaması

Cevap

To measure 50 cm³ of hydrochloric acid, the student should use a graduated cylinder. A graduated cylinder is a piece of laboratory equipment used to measure the volume of a liquid. It is marked with a scale that allows the user to read the volume of the liquid in cubic centimeters (cm³).<br /><br />The reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) is a neutralization reaction. In a neutralization reaction, an acid reacts with a base to produce a salt and water. In this case, the hydrochloric acid (an acid) reacts with the sodium hydroxide (a base) to form sodium chloride (NaCl) and water (H₂O).
Derecelendirmek için tıklayın: