Acids and alkalis

1. If weak lemon juice was added to Universal Indicator what colour would it turn?
Yellow
Weak acid (pH5 -6)
Red
Strong acid (pH 1or 2)
Purple
Strong alkali (pH 13,14)
Green
Neutral (pH7)
Blue
Weak alkali (pH8, 9 or 10)
2. If Magnesium hydroxide (indigestion powder) were added to vinegar which of the answers would best describe what would happen?
3. Water would be best described as
pH7
Neutral
pH1
Strong acid
pH6
A weak acid
pH8
Weak alkali