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Question 1 of 5
1. Question
1 point(s)Magnesium oxide reacts with sulphuric acid produces magnesium sulphate and water. What is the mass of magnesium sulphate formed when 5.0 g of magnesium oxide powder is added into excess sulphuric acid?
(Molar mass : MgO = 40; MgSO₄= 120)CorrectIncorrect -
Question 2 of 5
2. Question
1 point(s)Which of the following is the equation that represents the reaction between hydrochloric acid and sodium hydroxide?
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Question 3 of 5
3. Question
1 point(s)P, Q, R and S are four solutions with pH values 2, 4, 7 and 10 respectively. Which solutions could form a neutral solution when mixed together?
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Question 4 of 5
4. Question
1 point(s)25 cm³ sulphuric acid is neutralised by 25cm³ of 0.5 mol/dm³ potassium hydroxide solution. Find the concentration of the sulphuric acid.
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Question 5 of 5
5. Question
1 point(s)50.0cm³ of 0.2 mol dm⁻³ potassium hydroxide solution reacts completely with 50.0 cm³ of a 0.1 mol dm⁻³ acid. Which of the following is the possible formula of the acid?
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