Stogs GCSE Interleaving Acids S

High pH values show solutions are:

• Strongly acidic

• Strongly alkaline

• Neutral

• Weakly acidic

In an acidic solution methyl orange is:

• Yellow

• Orange

• Red

• Blue

In an acidic solution phenolphthalein is:

• Red

• Pink

• Colourless

• Blue

pH measures:

• The colour of a solution.

• The concentration of H⁺ and/or OH^- ions in a solution.

• The dissociation of an acid.

• The concentration of an acid.

A high concentration of H⁺ ions in solution will give:

• A high pH.

• A low pH.

• A negative pH.

• A medium pH.

A base is:

• A soluble alkali.

• Something containing H⁺.

• Something containing OH^-.

• A substance that reacts with an acid to form salt and water only.

Acid + Ammonia $\rightarrow$   

• Salt + Water

• Salt + Hydrogen

• Salt + Water + Carbon dioxide

• Salt only

Weak acids...

• ... partially dissociate in solution.

• ... fully dissociate in solution.

• ... partially move in solution.

• ... fully move in solution.

The ionic equation for neutralisation is:

• $NaOH\ +HCl\ \rightarrow\ NaCl\ +H_2O$

• $2KOH\ +H_2SO_4\ \rightarrow\ K_2SO_4\ +2H_2O$

• $OH^{-\ }+\ OH^-\ \rightarrow\ H_2O_2$

• $H^+\ +\ OH^-\ \rightarrow\ H_2O$

Preparation of which kind of salt features filtration?

• Insoluble

• Soluble

• Both soluble and insoluble

• Neither soluble or insoluble