An acid Multiple Choice donates electrons in an electron transfer reaction. None of these choices are correct. produces hydroxide ions when dissolved in water. donates protons in a proton transfer reaction. changes the color of phenolphthalein indicator from colorless to pink.

donates protons in a proton transfer reaction.

Explanation:

According to the Arrhenius concept, an acid is a substance that ionizes in the water to give hydrogen ion and a base is a substance that ionizes in the water to give hydroxide ion .

According to the Lewis concept, an acid is defined as a substance that accepts electron pairs and base is defined as a substance which donates electron pairs.

Phenolphthalein is an indicator which produces pink colour on adding into a base and turns colourless on adding to an acid.

Thus the only correct option is an acid donates protons in a proton transfer reaction.

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml

so what is the problem with your lab report and whats the subject of the lab report? i will you