1.Acids have relatively high pH compared to water?
* true or false
2 which are slippery when cleaning?
* bases, solvents, acids or solutions?
3.what is produced when an acid react with base?
* Water and salt
* water only
* Base and water
* none of the above
4. When an acid completely dissolves in water, it is called?
•weak acid
•weak base
•strong base
•strong acid
5. Sugar solution does not change the colour of blue and red litmus paper. Therefore, sugar solution is :
neutral , basic, alkaline or acidic?

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .