Acids Questionsv

8/12/2019 Acids Questionsv

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GCSE CHEMISTRY ACIDS, BASES & SALTS

High Demand Questions QUESTI!SHEET "

A #ood s$ientist $he$%ed the ua'it( o# a )ott'e o# *inega+

He too% -. $m o# the *inega+ and #ound out ho/ mu$h sodium h(d+o0ide /as needed to neut+a'ise it1

2a3 2i3 E04'ain /hat is meant )( 5neut+a'ise6

7"8

2ii3 9hat a44a+atus $ou'd the s$ientist ha*e used to measu+e the amount o# sodium h(d+o0ide needed:

7"8

He a'so tested some ethanoi$ a$id so'ution Ethanoi$ a$id is the a$id /hi$h is #ound in *inega+

His +esu'ts a+e sho/n )e'o/

*inega+ ethanoi$ a$id

*o'ume used;$m1 -. ".*o'ume o# !aH needed

to neut+a'ise;$m1 1. ".

The ethanoi$ a$id so'ution $ontained ". g o# a$id in e*e+( ".. $m o# so'ution1

2)3 2i3 Ho/ man( g+ams o# ethanoi$ a$id a+e the+e in ". $m o# so'ution:1

7"8

2ii3 9o+% out ho/ man( g+ams o# ethanoi$ a$id a+e in -. $m o# the *inega+1

7


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High Demand Questions QUESTI!SHEET in$ /e+e 4'a$ed in test tu)es $ontaining sma''

uantities o# h(d+o$h'o+i$ a$id The #o''o/ing +esu'ts /e+e o)se+*ed

$o44e+ magnesium ni$%e' >in$

2a3 Use the o)se+*ations #+om a)o*e to $om4'ete the #o''o/ing +ea$ti*it( se+ies

" most +ea$ti*e


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High Demand Questions QUESTI!SHEET 1

2a3 The meta' sodium )u+ns in 'imited o0(gen /ith a )+ight (e''o/ #'ame to #o+m sodium o0ide

2i3 9+ite a /o+d euation #o+ the +ea$tion )et/een sodium and o0(gen

7"8

2ii3 9hat is the #o+mu'a o# sodium o0ide:

2A sodium ion is !a and an o0ide ion is 3


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High Demand Questions QUESTI!SHEET ?

The #o''o/ing e04e+iment /as $a++ied out using $on$ent+ated ammonia so'ution and $on$ent+ated h(d+o$h'o+i$ a$id

2a3 Ammonia $ontains the e'ements h(d+ogen and nit+ogen and has the $hemi$a' #o+mu'a !H 1

2i3 !ame the t(4e o# )onding that e0ists in ammonia

7"8

2ii3 Use the e+iodi$ Ta)'e to d+a/ a dot and $+oss diag+am to sho/ the )onding in a mo'e$u'e o#

ammonia You need on'( sho/ the e'e$t+ons in the oute+ ene+g( 'e*e'

7


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High Demand Questions QUESTI!SHEET -

The diag+am )e'o/ sho/s an e04e+iment to measu+e the +ate o# +ea$tion )et/een $a'$ium $a+)onate and

su'4hu+i$ a$id

$a'$ium

$a+)onatesu'4hu+i$ a$id

gas s(+inge

2a3 The +ea$tion )et/een $a'$ium $a+)onate and su'4hu+i$ a$id 4+odu$es a $hemi$a' $om4ound $a''ed a

sa't, a gas and /ate+

2i3 The gas 4+odu$ed $an )e identi#ied using 'ime/ate+ !ame the gas and the +esu't o# this test

!ame o# gas

Resu't o# test 7


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High Demand Questions QUESTI!SHEET F

The ta)'e )e'o/ sho/s the $o'ou+s o# *a+ious indi$ato+s at di##e+ent 4H *a'ues

indi$ato+ $o'ou+ " 4H $o'ou+ < 4H

)+omo4heno' )'ue (e''o/ 1 )'ue ?-4heno'4htha'ein $o'ou+'ess = 4in% ".

meth(' o+ange +ed 1 (e''o/ ?-

th(mo' )'ue (e''o/ F )'ue -

H(d+o$h'o+i$ a$id has a 4H o# ". and ethanoi$ a$id has a 4H o# -.

Ammonia so'ution has a 4H o# ".. and sodium h(d+o0ide has a 4H o# "


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High Demand Questions QUESTI!SHEET

S'a%ed 'ime is used +aise the 4H o# soi'

2a3 9hat is the $hemi$a' name #o+ s'a%ed 'ime:

7"8

2)3 The +e$ommended amount to use is "


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High Demand Questions QUESTI!SHEET =

Su'4hu+ dio0ide +ea$ts /ith $h'o+ine, in the 4+esen$e o# /ate+, to 4+odu$e a mi0tu+e o# h(d+o$h'o+i$ and

su'4hu+i$ a$ids

2a3 Com4'ete the euation #o+ the +ea$tion

S< C'< H < 7


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Medium Demand Questions QUESTI!SHEET @

The 4H o# $hemi$a's #ound a+ound the home ma( )e tested using 4H 4a4e+ Some t(4i$a' +esu'ts a+e

sho/n )e'o/

4H " < 1 ? - F = @ ". "" "< "1 "?

'emon Kui$e o+ange Kui$e /ashingu4 'iuid o*en $'eane+

2a3 Ans/e+ the #o''o/ing uestions using the a)o*e in#o+mation

2i3 9hat is the 4H o# o*en $'eane+:

7"8

2ii3 9hi$h is the most a$idi$ so'ution:

7"8

2iii3 9hat /ou'd )e the 4H o# a neut+a' so'ution:

7"8

2)3 inega+ /as a'so tested using 4H 4a4e+ and #ound to ha*e a 4H o# ?" 9hat $o'ou+ did the 4H

4a4e+ )e$ome:

7"8

2$3 9hen a /as4 stings someone its inKe$ts a 'iuid in the 4e+sons s%in An o'd #ashioned +emed( #o+ /as4stings is to +u) *inega+ on them

2i3 Suggest the 4H o# the 'iuid /hi$h /as4s inKe$t into the s%in

7"8

2ii3 9hat name is gi*en to the +ea$tion /hi$h ha44ens )et/een this 'iuid and the *inega+:

7"8

2iii3 !ame the $o'ou+'ess, taste'ess 'iuid that is 4+odu$ed in this +ea$tion

7"8

TTAL ;


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Medium Demand Questions QUESTI!SHEET ".

Some 4eo4'e su##e+ #+om a$id indigestion /hen thei+ stoma$h 4+odu$es e0$ess stoma$h a$id The 'a)e'

on a househo'd )+and o# indigestion ta)'ets sa(s that it $ontains magnesium $a+)onate

2a3 Magnesium $a+)onate is inso'u)'e in /ate+ 9hen mi0ed /ith /ate+, /hat $o'ou+ /ou'd it tu+n4H 4a4e+:

7"8

2)3 The inst+u$tions on the 4a$%et suggest that " o+ < ta)'ets a+e $he/ed as +eui+ed

2i3 9hat name is gi*en to the +ea$tion /hi$h ha44ens )et/een the e0$ess a$id and the indigestion ta)'et:

7"8

2ii3 E04'ain /h( the inst+u$tions suggest that the ta)'ets a+e $he/ed /hen ta%en

7


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Medium Demand Questions QUESTI!SHEET ""

2a3 In an e04e+iment ammonia so'ution, an a'%a'i, /as added to nit+i$ a$id

nit+i$ a$id

ammonium h(d+o0ide

a44a+atus A

2i3 9hat is the name o# a44a+atus A:

7"8

2ii3 9hat is the name o# the +ea$tion /hen the a$id +ea$ts /ith the a'%a'i:

7"8

2iii3 9hat is the 4H /hen Kust enough ammonia so'ution is added to +ea$t /ith a'' the nit+i$ a$id:

7"8

2)3 2i3 9hat is the ion /hi$h is 4+esent in an( so'ution o# a$id:

7"8

2ii3 9hat is the ion /hi$h is 4+esent in an( so'ution o# a'%a'i:

7"8

2iii3 9+ite the sim4'est ioni$ euation /hi$h +e4+esents the a)o*e +ea$tion

7"8

2$3 The #o''o/ing 'a)e' is #ound on the )ott'e $ontaining the nit+i$ a$id

2i3 9hat does the 'a)e' te'' (ou a)out the nit+i$ a$id:

7"8

2ii3 Suggest t/o 4+e$autions /hi$h shou'd )e ta%en /hen using the nit+i$ a$id in the e04e+iment

" 7"8


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Medium Demand Questions QUESTI!SHEET "> - 4

a'uminium h(d+o0ide A'2H3 1 does not #i>>


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QUESTI!SHEET "- C!TI!UED

2ii3 Use a'' the in#o+mation gi*en to $hoose the )est anta$id

Gi*e a +eason #o+ (ou+ ans/e+

718

TTAL ; "?


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Medium Demand Questions QUESTI!SHEET "F

Oames s4i't some a$id on the #'oo+ He 'oo%ed at the 4ossi)i'it( o# t+eating it /ith one o# #ou+ $hemi$a's Thei+

4+o4e+ties a+e summa+ised in the ta)'e

su)stan$e 4H +ea$tion /ith a$idA "1. 4+odu$es a sa't and /ate+

B =- 4+odu$es a sa't, /ate+ and $a+)on dio0ide

C =. 4+odu$es a sa't and /ate+

D ". no +ea$tion

2a3 2i3 9h( /ou'd su)stan$e D )e use'ess #o+ the 4u+4ose:

7"8

2ii3 9hi$h othe+ su)stan$e /ou'd (ou ad*ise him to a*oid: 2Gi*e a +eason3

7


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Lo/ Demand Questions QUESTI!SHEET "

!ett'es, )ees and ants sting )( inKe$ting a$id into (ou+ s%in

9as4 stings a+e a'%a'ine

2a3 Ho/ $ou'd (ou test to 4+o*e that the 'iuid #+om an ant is a$id:

7


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Lo/ Demand Questions QUESTI!SHEET "=

The 4H o# soi' is *e+( im4o+tant in de$iding /hi$h $+o4s g+o/ )est

The ta)'e )e'o/ sho/s the 4H +anges /hi$h a+e )est #o+ some 4'ants

'ant 4H +ange)eans F. to -

4otato -. to F-

onion F. to .

'ee% F. to =.

The soi' in th+ee #ie'ds /as tested

The +esu'ts a+e sho/n )e'o/

#ie'd 4H o# soi'

A FF

B 1C --

2a3 In /hi$h #ie'd is the soi' most a$idi$:

7"8

2)3 No+ ea$h #ie'd 'ist the $+o4s /hi$h /ou'd g+o/ )est in it

Nie'd A 718

Nie'd B 7


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Lo/ Demand Questions QUESTI!SHEET "@

E4som sa'ts /as a #a*ou+ite medi$ine o# ou+ g+and4a+ents

Its $hemi$a' name is magnesium su'4hate

2a3 9+ite do/n the #o+mu'a o# magnesium su'4hate

7"8

Sa'ts $an )e made in a num)e+ o# /a(s

I adding a meta' to an a$id

II adding a $a+)onate to an a$id

III adding a h(d+o0ide to an a$id

2)3 No+ ea$h o# the methods a)o*e, gi*e the $o++e$t $hemi$a' name o# t/o su)stan$es /hi$h $ou'd )e mi0ed

to ma%e magnesium su'4hate

method I 7


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TAL ;


Lo/ Demand Questions QUESTI!SHEET

Acids Questionsv

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