Esoma-KE Logo
Change Class  |  Change Subject

Substances and their pH values

Select Subject  |  Chemistry


Want to enjoy learning? Try reading without Ads!

Say goodbye to distractions and enjoy uninterrupted learning with our new ad-free feature. Dive into our vast collection of educational content without any interruptions.

Explore Ad-Free learning plus lots of other premium benefits for as little as KES 200 per month.

Want to enjoy learning? Try reading without Ads!

Say goodbye to distractions and enjoy uninterrupted learning with our new ad-free feature. Dive into our vast collection of educational content without any interruptions.

Explore Ad-Free learning plus lots of other premium benefits for as little as KES 200 per month.


Substances and their pH values

Question

The following data gives the pH values of some solutions
Chemistry Question

(a) What colour change would occur in solution P on addition of two drops of phenolphthalein indicator?
(b) State the pH value of a resulting solution when equal moles of solution P and R react

Answer

(a)Pink

(b) 7.0


   Related Questions

Q. The following data gives the PH values of solutions P, Q and R. Which solution will produce carbon IV oxide when reacted with marble chips? Which solution would be a suitable anti-acid? Q. The table below shows solutions A, B and C are tested and observations records as shown. Using the table above, name an acid. How does the pH value of 1M potassium hydroxide solution compare with that of 1M aqueous ammonia? Explain Q. The information below gives PH values of solutions V, W, X, Y Z. Which solution is likely to be: Calcium hydroxide? Rain water? Which solution would react most vigorously with Zinc carbonate? Q. The table below shows PH values of solutions A, B, C and D. Which solution produces bubbles with zinc metal. Explain. Select any pair that would react to form a solution of PH = 7. Q. When the chlorides of Aluminium and silicon are dissolved in water, the resulting solution has a Ph of 3.0. Explain Q. In an experiment a test tube full of chlorine water was inverted in chlorine water as shown in the diagram below and then the set up left in the sunlight for one day. After one day, a gas was found to have collected in the test tube. Identify the gas. What will happen to the pH of the solution in the beaker after one day? Give a reason. Q. The table below shows PH values of solutions A, B, C and D. Which solution produces bubbles with zinc metal. Explain. Select any pair that would react to form a solution of PH = 7. Q. A compound of carbon, hydrogen and oxygen contains 71.12% oxygen, 2.2% hydrogen and rest carbon. If it has a relative molecular mass of 90. Determine the empirical formula of the compound C = 12, 0 = 6 H = 1. Determine the molecular formula of the compound. Q. 0.84g of Aluminium reacted completely with chlorine gas. Calculate the volume of chloride gas used (molar gas volume is 24dm³, Al = 27) Q. 20.0cm³ of a solution containing 4g per litre of sodium hydroxide was neutralized by 8.0cm³ of dilute sulphuric (VI) acid. Calculate the concentration of sulphuric (VI) acid in moles per litre Na=23, 0=16 H=1 s=32. Q. Draw and name the structural formula of the compound formed when one mole of ethyne reacts with one mole of chlorine gas.